Added Element extension with .matches and .closest

## What does this MR do?

This adds `.matches` and `.closest` polyfills that will help when removing/not using jQuery. I added these in another MR which was then refactored to not require these methods, but I thought we might as well not lose the code.

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

## Why was this MR needed?

Help when removing/not using jQuery.

## Screenshots (if relevant)

## Does this MR meet the acceptance criteria?

- [ ] [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 [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [ ] 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 it does - rebase it please)
- [ ] [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 !6946

Creates new list from a new label

## What does this MR do?

After creating a new label in the new list dropdown it automatically creates a new list.

## Screenshots (if relevant)

![new-label](/uploads/87940e364dc075ea8cc08d97bc1f1eff/new-label.gif)

## What are the relevant issue numbers?

Closes #23026

See merge request !6744

Add width to caret to rid ourselves of the shift

## What does this MR do?
Removes the shift from diff files.

## Are there points in the code the reviewer needs to double check?
That it doesn't shift.

## Why was this MR needed?
There was a shift in the minimizing of diff files.

## Screenshots (if relevant)
![switcheroo](/uploads/f9734e1d11715e49008e0ca9104d2d4c/switcheroo.gif)

## 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)
- [x] API support added
- Tests
  - [ ] Added for this feature/bug
  - [x] All builds are passing
- [x] Conform by the [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [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 it does - 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 https://gitlab.com/gitlab-org/gitlab-ce/issues/23424

See merge request !6934

Added various stylistic changes to commit title area

## What does this MR do?

After https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/6994 was merged, there were some things left over.

## Are there points in the code the reviewer needs to double check?
Yes, in general the code.

Apart from that I couldn't get the extended commit sha to lign up correctly on smaller screens

## Why was this MR needed?
Some things weren't done yet.

- Commit description and commit sha are now bold like in the original design, and are also both visible on smaller screens
- You can now extend the commit sha on bigger screens and keep it visible truncated on smaller screens.
- options dropdown button now correctly displays on smaller screens (similar to issue/mr view)

## Screenshots (if relevant)
Before:
![image](https://gitlab.com/gitlab-org/gitlab-ce/uploads/716cb902bd20dedc705a8f81f6536736/Screen_Shot_2016-10-19_at_10.20.01_AM.png)

After:
![image](/uploads/2329c9e2c731f0fc850b4864fb216756/image.png)
![image](/uploads/d8afde519fe276c0bce2286e56ea463b/image.png)

not aligned correctly:
![image](/uploads/9006df59a1de3875b2317f14d3d20872/image.png)


## Does this MR meet the acceptance criteria?

- [ ] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG.md) 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 [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [ ] 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 it does - rebase it please)
- [ ] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

## What are the relevant issue numbers?
!6994

See merge request !7213

Allow to test JIRA service when project does not have repository

closes #23032

See merge request !7162

Fix applying GitHub-imported labels when importing job is interrupted

Closes #24075

See merge request !7245

Show pipeline status from branch and commit than only commit

Closes #23615

See merge request !7034

Updates deckar01-task_list gem to its latest version

See merge request !7185

Add serializer for environments

## What does this MR do?

This will make it possible to create a payload need in https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/7015 for use with Vue.

## Why was this MR needed?

Closes #23886

See merge request !7174

See merge request !7014
Signed-off-by: Rémy Coutable <remy@rymai.me>

Apply `*_params_ce + *_params_ee` pattern to MergeRequestsController

See merge request !7263

Add setting to only allow merge requests to be merged when all discussions are resolved

_Originally opened at !6385 by @rodolfoasantos._

- - -

## What does this MR do?
Based on #20968 this merge request adds setting only to allow merge requests to be merged when all discussions are resolved. 

## Are there points in the code the reviewer needs to double check?
Check if there are other points to add the resolved discussion setting

## Why was this MR needed?
Add the possibility to configure the project to only accept merge request when all discussions are resolved

## Screenshots

![only_allow_merge_if_all_discussions_are_resolved](/uploads/9388db9421da0214590ffab6fb29f985/only_allow_merge_if_all_discussions_are_resolved.png)

![only_allow_merge_if_all_discussions_are_resolved_msg](/uploads/b1bba0c72ad67d3a1b34718baa08526e/only_allow_merge_if_all_discussions_are_resolved_msg.png)

## 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)
- [x] API support added
- Tests
  - [x] Added for this feature/bug
  - [ ] All builds are passing
- [x] Conform by the [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [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 #20968

See merge request !7125

Feedback:
https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/7034/diffs#note_17868074

https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/changelog.md

* upstream/master: (35 commits)
  Only skip group when it's actually a group in the "Share with group" select
  Fix: Todos Filter Shows All Users
  Fix: Guest sees some repository details and gets 404
  Move shared params to a helper
  GrapeDSL for project hooks
  Update commits.scss
  updated styling commit SHA on branches page + added to changelog
  change build list height to show 6,5 builds + improve padding of list, with first/last child selectors
  Ignore builds directory from eslint
  Add changelog entry
  Document multiple repository storage paths
  Allow multiple repository storage shards to be enabled, and automatically round-robin between them
  Cleaned up global namespace JS
  Add tip for using Chrome to run and debug teaspoon tests.
  Add CHANGELOG entry file
  Add jquery.timeago.js to application.js
  Update match-regex to fix filename convention
  Move jquery.timeago to vendor directory
  Change a bunch of doc links to either relative or https://docs.gitlab.com.
  Show log corresponding to env in admin/logs
  ...

GrapeDSL for project hooks

See merge request !6963

Fix: Todos Filter Shows All Users

Closes #22588

See merge request !7258

Closes #24075

Add documentation for the "Only allow merge requests to be merged if all discussions are resolved" feature
Signed-off-by: Rémy Coutable <remy@rymai.me>

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

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

Only skip group when it's actually a group in the "Share with group" select

Fixes #23961

See merge request !7262

Update rdoc to `~> 4.2`

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/2814

See merge request !7261

Backport Group API code that was added in EE only

Group API code that was added in EE only. /cc @vsizov

See merge request !7205

Fix: Guest sees some repository details and gets 404

Closes #24056

See merge request !7222

Add CHANGELOG

uses fa-fw from font awesome instead of using declaring fix width explicitly

moves changelog entry under 8.14

rebased with master

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

Resolve "Introduce round-robin project creation to spread load over multiple shards"

## What does this MR do?

Allow multiple shards to be enabled in the admin settings page, balancing project creation across all enabled shards.

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

* `f.select ..., multiple: true` isn't the most beautiful UI in the world, but switching to `collection_check_boxes` (or a facsimile thereof) isn't trivial
* Should `pick_repository_storage` be a method of `ApplicationSetting`, or `Project`? It's going to accrete logic over time so perhaps it should be its own class already?
* This is written to avoid the need for a database migration, so it is`serialize :repository_storage` without `, Array`. This is tested, but alternatives include:
  * Add a database migration
  * Write a custom Coder that will accept a String or Array in `load` and always `dump an Array.

## Why was this MR needed?

## Screenshots (if relevant)

![Screen_Shot_2016-11-03_at_14.42.41](/uploads/7de15d6c1b3fa60bb7a34d6a7d9f00ce/Screen_Shot_2016-11-03_at_14.42.41.png)

## Does this MR meet the acceptance criteria?

- [X] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG.md) entry added
- [X] [Documentation created/updated](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/doc/development/doc_styleguide.md)
- [x] API support added
- Tests
  - [X] Added for this feature/bug
  - [ ] All builds are passing
- [X] Conform by the [merge request performance guides](http://docs.gitlab.com/ce/development/merge_request_performance_guidelines.html)
- [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 it does - 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 #24059

See merge request !7273