Delete dynamic environments

- Adds "close environment" action to a merge request
- Adds tabs to environments list
- Adds close button to each environment row in environments list
- Replaces Destroy button with Close button inside an environment
- Adds close button to builds list inside an environment

In order to enable stopping environments a valid `.gitlab-ci.yml` syntax has to be used:

```
review:
  environment:
    name: review/$app
    on_stop: stop_review

stop_review:
  script: echo Delete My App
  when: manual
  environment:
    name: review/$app
    action: stop
```

This MR requires that `stop_review` has to have: `when`, `environment:name` and `environment:action` defined.
The next MR after this one will verify that and enforce that these settings are configured.

It will also implicitly configure these settings, making it possible to define it like this:

```
review:
  environment:
    name: review/$app
    on_stop: stop_review

stop_review:
  script: echo Delete My App
```

Closes #22191

See merge request !6669
Signed-off-by: Rémy Coutable <remy@rymai.me>

Add group level labels.

* `LabelsFinder`
* `Gitlab::Gfm::ReferenceRewriter`
* `Banzai::Filter::LabelReferenceFilter`

We'll be adding more feature that allow you to do cross-project management of issues.

loses #19997

See merge request !6425
Signed-off-by: Rémy Coutable <remy@rymai.me>

Add tooltip with jobs full name to pipelines graph

## What does this MR do?

This MR adds a tooltip to build items in the pipelines graph as some build names are truncated.

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

## Why was this MR needed?

Some job names that are truncated need to be fully identified to avoid confusion.

## Screenshots (if relevant)

[Latest screenies here!](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/6403#note_16968703).

## 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 you do - 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?


Closes #22089

See merge request !6403

Changed build header username area to use the full name with the username as the tooltip

## What does this MR do?

Changes build header username to use the full name with the username as the tooltip.

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

## Why was this MR needed?

UI consistency

## Screenshots (if relevant)

![2016-09-08_19.24.22](/uploads/958422819ae3057f1499b2686d83e326/2016-09-08_19.24.22.gif)

## 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 you do - 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?

Contributes to #21832

See merge request !6272

Add pipelines tab to new MR

#### What does this MR do?
Adds pipelines tab to new MRs

#### Screenshots (if relevant)
![Screen_Shot_2016-10-10_at_10.23.27_AM](/uploads/6c3f8f2be0cf9ba7cc78f6d918307ec0/Screen_Shot_2016-10-10_at_10.23.27_AM.png)
![Screen_Shot_2016-10-11_at_8.59.45_AM](/uploads/e67577d92327eafef6f04073f3d94212/Screen_Shot_2016-10-11_at_8.59.45_AM.png)

#### What are the relevant issue numbers?
Closes #21444

See merge request !6238

Fix retried builds styling

#### What does this MR do?
Adds background color to retried builds and an icon + tooltip on retried builds in build list

#### Screenshots (if relevant)
<img src="/uploads/4138dd277c185de3c271b2eb9b459761/Screen_Shot_2016-10-13_at_2.44.27_PM.png" width="500px">
<img src="/uploads/99227d5ed3816a509660fe5a84da5b2a/Screen_Shot_2016-10-13_at_3.01.13_PM.png" width="500px">
#### What are the relevant issue numbers?
Closes #21192

See merge request !6109

Add a new pipeline email service

## What does this MR do?

Add a new pipeline email service

## What are the relevant issue numbers?

Closes #3976 

## Remaining tasks

* [x] Preserve `·` and ` `
* [x] Use XHTML 1.0
* [ ] Use the same layout (`app/views/layouts/notify.html.haml`)
* [ ] Digest or not (assets or public)
* [x] A similar email for succeeded pipeline
* [x] Plain text versions for both emails

## Screenshots (if relevant)

https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/6019#note_16594345

## 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] `PipelinesEmailService`
  - [x] `SendPipelineNotificationService`

See merge request !6019

LDAP login style fixups

## What does this MR do?
* Addresses regression found here: https://gitlab.com/gitlab-org/gitlab-ce/issues/23435
* Adds border radius to left/right tabs

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

So you know what you're seeing, there are three types of fixes going on here: 

1. Template syntax errors that were displaying template-like language in the DOM (specifically with ldap and crowd username labels
2. Aesthetic problems in tabs that arise with more than 2 tabs
3. LDAP and crowd tab functionality. I had to move each panel into its own login box, to ensure that each panel's id synced with its associated tab's href, and that each panel was at an equal depth within the DOM. I assumed bootstrap tabs would look deeper into the login-box to find panels that matched the tabs. This is not true. The reason I didn't catch this is that in development I was just manually changing template flags to force rendering. I didn't realize I could enable ldap in CE within the gitlab.yml file 🤦  

See merge request !6947

Use GrapeDSL for commits

See merge request !6914

Fix save button on pipelines settings page

## What does this MR do?

This MR fixes 'Save button' on pipeline settings page, which didn't change state to enabled after saving settings.

## 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
  - [ ] All builds are passing

## What are the relevant issue numbers?

Closes #23431

See merge request !6955

Make cancelled pipelines being able to retry

## What does this MR do?

Make cancelled pipelines being able to retry

## 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

## What are the relevant issue numbers?

Closes #23326

See merge request !6927

Add visibility level to project repository

implements #19734

See merge request !6396

Add a be_like_time matcher and use it in specs

## What does this MR do?

Introduces a be_like_time matcher and refactors existing code to use it

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

A few sites use be_within(2.seconds) or 5.minutes - I didn't change those

## Why was this MR needed?

A custom matcher helps to document that we need to compare times loosely, and keeps the fudge factor from being declared in multiple places.

## 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?

Related to !6935

See merge request !6936

Fix the diff in the merge request view when converting a symlink to a regular file

## What does this MR do?

It fixes a bug described in #21610

## Why was this MR needed?

There was a regression introduced in https://gitlab.com/gitlab-org/gitlab-ce/commit/cd7c2cb6ddd4d9c9f9bdae00c887c0022c121c17

## 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 [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?

Fixes #21610

See merge request !6828

Execute specific named route method from toggle_award_url helper method

See merge request !6848

Avoid race condition when expiring artifacts

## What does this MR do?

It may happen that job which purpose is to remove expired artifacts will be executed asynchronously when, in the meantime, project associated with given build gets removed by another async job. In that case we should not remove artifacts because such build will be eventually removed anyway along with artifacts, when project removal is complete.

## 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

## What are the relevant issue numbers?

Closes #22296

See merge request !6881

* upstream/master: (58 commits)
  Update endpoint to username validator
  change border color to variable
  Add todo for deprecated user routes and more information about deprecation to changelog
  Provide better error message to the user
  Apply better hierarchy to markdown headers and issue/mr titles
  Swapped button text manipulation outcomes for the toggle query
  Fixed find file keyboard navigation
  Update CHANGELOG for 8.12.7
  Added download-button class and applied button margin
  Enable activerecord_sane_schema_dumper for test
  Updated logo from @luke
  Fix broken specs on MySQL after https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/6896
  Fix Test Env (proper error handling when gitlab-shell is not clonned)
  Fix randomly crashing spinach test for merge request
  [Great spinach fix] Replace gsub with delete
  Remove carriage returns from commit description as summary is on a newline and will always include carriage returns
  Convert due_date_select.js filetype to es6.
  Stop directly parsing due_date with Date.parse, prefer parsing implicitly.
  Improve spec for pipeline metrics worker
  Add Pipeline metrics worker
  ...

[ci skip]

Resolve Merge conflicts in editor

## What does this MR do?

This is the second iteration of https://gitlab.com/gitlab-org/gitlab-ce/issues/20344 which now allows to resolve conflicts manually providing an editor to the user.

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

- Previous implementation has been refactored almost from the ground up.
- Also some components like `parallel-conflict-lines` has been optimized to work well with PhantomJS.
- The app and files required files are loaded only when needed. `merge_conflicts_bundle.js` is only loaded in `/<group>/<project>/merge_requests/<Id>/conflicts` only

## Why was this MR needed?

Some MRs were unable to be solved interactively in the UI, with this MR we let the user to manually fix complex merge request conflicts.

## Screenshots (if relevant)

<img src="/uploads/33a016f025bd590b1fc6eeee1ee11626/Screen_Shot_2016-09-19_at_1.39.39_PM.png" width="800">

## 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
  - [x] 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)
- [x] Branch has no merge conflicts with `master` (if you do - 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?

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/20344, https://gitlab.com/gitlab-org/gitlab-ce/issues/3567.

See merge request !6374

Fixes endpoint to username validator

Fixes failing specs on master. Introduced here https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/6328

See merge request !6951