* pipeline-hooks-without-slack: (156 commits)
  Fix test failures
  Make pipeline to be in created state for hooks tests
  Make `execute_methods` public
  Added specs for started_at and finished_at
  Use explicit events to transition between states
  Fix tests. We cannot reload unless it's already saved:
  Have trait all_events_enabled so that's easier to reuse, feedback:
  Simplify the name for data builder, feedback:
  Prefer extend self over module_function, feedback:
  Make it more grammatically correct, feedback:
  if -> when; when -> `when`; %w() -> %w[]; and fix some typos:
  Prefer described_class, feedback:
  Make the comment more clear, feedback:
  Update CHANGELOG
  render only commit title
  Fix test failures, that did occur because of missing previously used `reload_status!` call
  Use state machine for pipeline event processing
  Upgrade Rails to 4.2.7.1 for security fixes.
  Update gitlab-shell to v3.3.3
  Verify the pipeline status after executing events on builds
  ...

# Conflicts:
#	app/models/ci/pipeline.rb
#	app/models/commit_status.rb
#	app/services/ci/create_pipeline_service.rb
#	spec/models/ci/pipeline_spec.rb

Not sure if this is the right fix...
Or maybe we should actually merge:
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/5782

https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/5620#note_13823349

https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/5620#note_13671791

https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/5620#note_13672004
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/5620#note_13810498

https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/5620#note_13811203

Feedback:
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/5620#note_13810945

https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/5620#note_13810811
And other similar places.

https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/5620#note_13810778

Resolve "New pipeline auto-completion"

## What does this MR do?

Add auto-completion to new pipeline.

## What are the relevant issue numbers?

Closes #19725 

See merge request !5389

update CHANGELOG

add auto-completion into pipeline

add auto-completion into pipeline

add auto-completion into pipeline

update changelog

modify tests

remove empty lines

add auto-completion into pipeline

update changelog

modify tests

switch text_field_tag into text_field

add test to new field

switch context into describe

Update CHANGELOG

render only commit title

update CHANGELOG

add auto-completion into pipeline

add auto-completion into pipeline

add auto-completion into pipeline

update changelog

modify tests

remove empty lines

add auto-completion into pipeline

update changelog

modify tests

update changelog

Update CHANGELOG

add indetation

add tests to pipeline ref

change file name for tests

change file name for spec tests

remove empty line

rename test it

rename test name

removing unexpected changes

removing unexpected changes2

update changelog

Update gitlab-shell to v3.3.3

Finishing touch for https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/5542

![](https://gitlab.com/gitlab-org/gitlab-shell/uploads/bd0d4864f7bd864d38bfb6798fdd4ea3/image.png)

See merge request !5780

Upgrade Rails to 4.2.7.1 for security fixes.

Upgrades Rails from 4.2.7 to 4.2.7.1 for security fixes.

For more information: http://weblog.rubyonrails.org/2016/8/11/Rails-5-0-0-1-4-2-7-2-and-3-2-22-3-have-been-released/

This should be backported to all currently-supported releases.

See merge request !5781

More information available at: http://weblog.rubyonrails.org/2016/8/11/Rails-5-0-0-1-4-2-7-2-and-3-2-22-3-have-been-released/

Merge request link after pushing

## What does this MR do?
Add API to generate new merge request urls if it is a new branch. The API will be called by gitlab-shell 

## What are the relevant issue numbers?

#18266 

## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- [x] API support 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 !5542

Use Ruby 2.3.1

## What does this MR do?

This WIP MR will eventually introduce 2.3 as default language for GitLab CE/EE

## Why was this MR needed?

@connorshea wants to be prepared for Rails 5.0, so we need Ruby > 2.2, so why not go 2.3 already?

## What are the relevant issue numbers?

Closes #12507 

## TODO

- [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)
- [x] All builds are passing
- [ ] [Omnibus uses 2.3.1](https://gitlab.com/gitlab-org/omnibus-gitlab/merge_requests/847)

See merge request !4948

Remove need for schedules

Solves https://gitlab.com/gitlab-org/gitlab-ce/issues/15156

\cc @pmachle ,  \cc @dusek

See merge request !3685

Ruby 2.1.8 is used only on master for now, as this would give
confidance in case this commit has to be reverted.

Show member roles to all users on members page

Closes #20614 and https://gitlab.com/gitlab-org/gitlab-ee/issues/850

See merge request !5776