re a conversation with @rspeicher, this spec isn't really testing
anything.

Add a download buttons for Build Artifacts

## What does this MR do?
This MR adds a download buttons for build artifacts of latest succesful pipeline in:
- dashboard of project,
- branches and tags views,
- and tree viewer

Implement #4255

## What are the relevant issue numbers?

Closes #4255, Closes #14419

## Screenshots

### Project main

![](/uploads/29ee2154a214416059a875f2715d4fa3/Screen_Shot_2016-08-24_at_8.00.31_PM.png)

### Branches

![](/uploads/9220c593288370986fbc1d42a1425ef7/Screen_Shot_2016-08-24_at_8.02.01_PM.png)

### Tags

![](/uploads/a843e8103221fea475a0cf9d62a1999d/Screen_Shot_2016-08-24_at_8.03.32_PM.png)

### Source Tree

![](/uploads/63cd3c8c91b6f427c166dc90d8e3c059/Screen_Shot_2016-08-24_at_8.04.56_PM.png)

## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- [ ] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- [x] Download buttons
- [x] Models
- [x] Routes
- [x] Projects::ArtifactsController
- [x] API
- Tests
  - Rails
      - [x] Project#builds_for
      - [x] branch name with slashes
      - [x] only success builds
      - [x] only latest builds
      - [x] feature tests for download buttons
  - API
      - [x] branch name with slashes
      - [x] only success builds
      - [x] only latest builds
  - [x] All builds are passing
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

See merge request !5142

Add new icon for created pipeline

## What does this MR do?
Adds new icon for `created` status

## Screenshots (if relevant)
![Screen_Shot_2016-08-30_at_11.55.02_AM](/uploads/e062f9eb3b8102374fb92ce209ab69b1/Screen_Shot_2016-08-30_at_11.55.02_AM.png)

## What are the relevant issue numbers?

Closes #21520

See merge request !6108

Shorten task status phrase

## What does this MR do?
Shortens the task status phrase to make it easier to read

## Are there points in the code the reviewer needs to double check?
Shouldn't be any

## Why was this MR needed?
Improve readability/scan-ability of the issues table

## Screenshots (if relevant)
Before:
![Screen_Shot_2016-08-27_at_12.38.17_PM](/uploads/12d54e4ce24dea203e8f7189b32e3a43/Screen_Shot_2016-08-27_at_12.38.17_PM.png)

After:
![Screen_Shot_2016-08-27_at_12.38.05_PM](/uploads/7dfcc3284025b889f6afa09ca273d928/Screen_Shot_2016-08-27_at_12.38.05_PM.png)

## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- Tests
  - [x] All builds are passing
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

## What are the relevant issue numbers?
Closes #21543

See merge request !6062

Clarify blank line rule in newlines_styleguide.md

## What does this MR do?

* Corrects a typo in the GitLab Ruby newlines style guide
* Makes some vague language in the original guideline more precise

## Are there points in the code the reviewer needs to double check?

n/a

## Why was this MR needed?

* There was a typo in the original text.
* The original text was vague.

## What are the relevant issue numbers?

n/a

## Screenshots (if relevant)

n/a

## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added  (Is this recommended for this kind of patch?)
- ~~[Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)~~
- ~~API support added~~
- Tests
  - ~~Added for this feature/bug~~
  - [x] All builds are passing
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

See merge request !6048

User can edit closed MR with deleted fork

## What does this MR do?
User can edit closed MR with deleted fork (can't change "Target branch"). When fork is deleted "Reopen" button is hidden.

## What are the relevant issue numbers?
Closes #19315 

## Screenshots (if relevant)
* hidden Reopen button and information about deleted fork
![Zrzut_ekranu_2016-08-12_o_13.19.24](/uploads/d288c5625e788382e31b2979acb601df/Zrzut_ekranu_2016-08-12_o_13.19.24.png)

* editable fields for closed MR without fork
![Zrzut_ekranu_2016-08-05_o_12.24.38](/uploads/1549e54d4bc2a9939ef296ce66139706/Zrzut_ekranu_2016-08-05_o_12.24.38.png)


## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- Tests
  - [x] Added for this feature/bug
  - [x] All builds are passing
- [x] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

cc @ubudzisz @yorickpeterse @grzesiek @tmaczukin

See merge request !5496

Fix inconsistent background color for filter input field

## What does this MR do?
Removes the background color for the filter input field for the [projects dashboard](https://gitlab.com/dashboard/projects) and [groups page](https://gitlab.com/groups/gitlab-org) to stay consistent with the other input fields

## Are there points in the code the reviewer needs to double check?
None

## Why was this MR needed?
Fixes UI inconsistency

## Screenshots (if relevant)
Before:
![Screen_Shot_2016-08-29_at_11.07.28_AM](/uploads/dbd02534686a109fc98b838d2f332a42/Screen_Shot_2016-08-29_at_11.07.28_AM.png)

After:
![Screen_Shot_2016-08-29_at_11.07.38_AM](/uploads/4003a622c8568ce9c973a17c8f74557e/Screen_Shot_2016-08-29_at_11.07.38_AM.png)

## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- Tests
  - [x] All builds are passing
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

## What are the relevant issue numbers?
Closes #21399

See merge request !6089

Update Bitbucket OmniAuth documentation

## What does this MR do?

Updates the Bitbucket integration documentation.

## Why was this MR needed?

Current documentation is out of date and very confusing.

## What are the relevant issue numbers?

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/2137 and https://gitlab.com/gitlab-org/omnibus-gitlab/issues/1052.

See merge request !6106

Fix diff comments on legacy MRs

## What does this MR do?

Allow diff commenting on MRs without complete diff refs. (Commenting would work before, but the JSON response would fail, so you'd only see your comment after a refresh.)

## Are there points in the code the reviewer needs to double check?

Is this really all I needed to do? I feel like there must be more to it 😊

## Why was this MR needed?

It's a regression!

## What are the relevant issue numbers?

Closes #21211.

## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- Tests
  - [x] Added for this feature/bug
  - [x] All builds are passing
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

See merge request !6029

Fix resolving conflicts on forks

## What does this MR do?

When we resolve conflicts, we create a merge commit in the source branch with parents `[source_branch_head, target_branch_head]`. But when the MR is from a fork, `target_branch_head` might not exist in the source repo at all, so we need to fetch it if it isn't there. We can do this locally so it should be fast.

## Are there points in the code the reviewer needs to double check?

The `TestEnv` changes are needed to reset the branch refs if we're reusing a git directory locally - otherwise, there might not be conflicts!

## Why was this MR needed?

It's a bug in a new feature!

## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- Tests
  - [x] Added for this feature/bug
  - [x] All builds are passing
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

## What are the relevant issue numbers?

Closes #21459.

See merge request !6082

Fix "Wiki" link not appearing in navigation for projects with external wiki

## Are there points in the code the reviewer needs to double check?

No

## What are the relevant issue numbers?

Closes #21446

## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- [ ] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- [ ] API support added
- Tests
  - [x] Added for this feature/bug
  - [ ] All builds are passing
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [ ] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

See merge request !6057

Do not enforce using a hash with hidden ci key

## What does this MR do?

This MR remove the validation rule that was to strict.

## Why was this MR needed?

Enforcing hidden CI job configuration to be a hash, narrows options of using YAML anchors, and was not backwards compatbile.

## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- [x] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- Tests
  - [x] Added for this feature/bug
  - [ ] All builds are passing
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

## What are the relevant issue numbers?

Closes #21512

See merge request !6079

Remove vendor prefixes for linear-gradient CSS

## What does this MR do?
Removes the vendor prefixes for linear-gradient and the linear-gradient mixin since they are no longer needed with our latest and greatest browser (as per [annabeldunstone](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/5762#note_14353141))  

## Are there points in the code the reviewer needs to double check?
None

## Why was this MR needed?
Reduces unnecessary CSS

## Screenshots (if relevant)
None

## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- Tests
  - [x] All builds are passing
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

## What are the relevant issue numbers?
*  Closes #21558

See merge request !6063

Add white background for no readme container

## What does this MR do?
Changes the readme container background to white so that it is more consistent with the other default pages

## Are there points in the code the reviewer needs to double check?
Check for side effects but there really shouldn't be any

## Why was this MR needed?
Improves UI

## What are the relevant issue numbers?
Closes #20906 

## Screenshots (if relevant)
Before:
![Screen_Shot_2016-08-18_at_4.02.15_PM](/uploads/b3e70bba4c7ecab262bb4ff76bf80d85/Screen_Shot_2016-08-18_at_4.02.15_PM.png)

After:
![Screen_Shot_2016-08-22_at_4.30.41_PM](/uploads/520f276e1ed6786f66e3eff6e579b157/Screen_Shot_2016-08-22_at_4.30.41_PM.png)

## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- Tests
  - [x] All builds are passing
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

See merge request !5877

lib/backup: fix broken permissions when creating repo dir

## What does this MR do?

This MR fixes an issue where gitlab:backup:restore will not work because the repositories directory is set up with bad permissions. The bad permissions will prevent access to the repositories by the git user, causing all kinds of troubles (e.g. gitlab-shell won't install hooks).

## Are there points in the code the reviewer needs to double check?

## Why was this MR needed?

Rake task gitlab:backup:restore would complete successfully, but gitlab:check will report errors and gitlab cannot access repos.

## Screenshots (if relevant)

* repositories.old.1472478726 was created without the fix
* repositories was created with the fix

![gitlab-repo-permissions](/uploads/6cf2de57fe4f1be0bd5b5e1a13234889/gitlab-repo-permissions.png)

## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- [ ] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- [ ] API support added
- Tests
  - [ ] Added for this feature/bug
  - [ ] All builds are passing
- [ ] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

## What are the relevant issue numbers?

See merge request !6098

Add title to CI lint page

![Screen_Shot_2016-08-30_at_10.56.23](/uploads/651ce9e303b65854e96b18d301dcf1a3/Screen_Shot_2016-08-30_at_10.56.23.png)![Screen_Shot_2016-08-30_at_10.56.37](/uploads/77cb710971c4b84e659cbf9bbe13a1cb/Screen_Shot_2016-08-30_at_10.56.37.png)

See merge request !6100

Mention that the `:id` of a project can also be `NAMESPACE/PROJECT_NAME`

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/18936

See merge request !6102

[ci skip]

This commit fixes a typo where the mode argument to FileUtils.mkdir()
would be passed in decimal rather than octal format, yielding bad
permissions.