Fixes diff comment avatar tooltip escaping issues

Closes #29572

See merge request !10012

Resolve "Extract logic of who should receive notification into separate classes"

Closes #27477

See merge request !9446

Added Gitlab::Database.config

See merge request !10045

Use Gitaly for CommitController#show

See merge request !9629

Resolve GitLab QA cold boot problems on entry page

See merge request !10003

Remove UJS actions from pipelines tables

Closes #20450, #28535, and #5580

See merge request !9929

Fix time-sensitive helper spec

See merge request !10046

Fix Unicode 1.1 emojis

Closes #29557

See merge request !10031

This returns the ActiveRecord configuration for the current environment.

While CE doesn't use this very often, EE will use it in a few places for
the database load balancing code. I'm adding this to CE so we don't end
up with merge conflicts in this file.

Add a new have_html_escaped_body_text that match an HTML-escaped text

Closes #20121

See merge request !10015

Signed-off-by: Rémy Coutable <remy@rymai.me>

Stop CI notification showing when status is nil

See merge request !10044

Updates realtime documentation for the Frontend

See merge request !10038

Refactor award emojis document

Closes #29563

See merge request !10040

Issue boards blank state template in JS file

See merge request !9959

Restore sub-nav (Activity) for empty project

Closes #29577

See merge request !10033

Added labels to the issue web hook

Closes #22313

See merge request !9972

Use "branch_name" instead "branch" on V3 branch creation API

Closes #29604

See merge request !10030

Add ability to disable Merge Request URL on push

Closes #21451

See merge request !9663

Strip reference prefixes on branch creation

Closes #26470

See merge request !8498

Make sure alias email would never match original user

See merge request !10037

This solves transient failures when a text contains HTML-escapable
characters such as `'`.
Signed-off-by: Rémy Coutable <remy@rymai.me>

[ci skip]

Make the test less time sensitive by extending 0.2 days

See merge request !10035

Hopefully this could fix:

https://gitlab.com/gitlab-org/gitlab-ce/builds/12431186

To make sure that the email would never contain "joh"
otherwise it would match to this `another_user`.

days. This shall fix:
https://gitlab.com/gitlab-org/gitlab-ce/builds/12411626

and other test failures for the same thing.

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/29577

Fix https://gitlab.com/gitlab-org/gitlab-ce/issues/29557

When using the full font-stack some the Unicode 1.1 emojis are taken up
by fonts closer up the stack and don't represent the emoji well.

```
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif, "Apple
Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
```

 - On Windows, "Segoe UI" -> "Arial" takes over
 - On mac OS, "Helvetia" -> ".SF NS Display" takes over

mac OS 10.12.3 | Windows 10
--- | ---
![](http://i.imgur.com/JI99zoH.png) | ![](http://i.imgur.com/aek8G1X.png)

---

When using a shorter emoji font-stack, everything seems to be covered
well 🎉

```
font-family: "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
```

 - On Windows, "Segoe UI Emoji"  takes over
 - On mac OS, "Apply Color Emoji" takes over

mac OS 10.12.3 | Windows 10
--- | ---
![](http://i.imgur.com/bDwpGCw.png) | ![](http://i.imgur.com/7kUwEJQ.png)

Protect against unknown emojis in frequently used list

See merge request !10020