Grapify the projects snippet API

Related to https://gitlab.com/gitlab-org/gitlab-ce/issues/22928

See merge request !7621

Smarter cache invalidation

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/23550

See merge request !7360

Allow JIRA references for project snippets

closes #24303

See merge request !7541

Added permissions per stage to cycle analytics endpoint

See merge request !7613

Merge branch '24552-js-environment-timeago-is-not-rendered-and-text-shows-object-object-in-mr-widget' into 'master'

Fix timeago rendering for environment timeago

## What does this MR do?

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

## Why was this MR needed?

## Screenshots (if relevant)

## Does this MR meet the acceptance criteria?

- [ ] [Changelog entry](https://docs.gitlab.com/ce/development/changelog.html) 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?


Closes #24552

See merge request !7539

Merge branch '24616-mr-shows-the-build-for-this-merge-request-failed-although-builds-still-running' into 'master'

Resolve "MR shows "The build for this merge request failed" although builds still running"

Closes #24616

See merge request !7579

This refactors repository caching so it's possible to selectively
refresh certain caches, instead of just expiring and refreshing
everything.

To allow this the various methods that were cached (e.g. "tag_count" and
"readme") use a similar pattern that makes expiring and refreshing
their data much easier.

In this new setup caches are refreshed as follows:

1. After a commit (but before running ProjectCacheWorker) we expire some
   basic caches such as the commit count and repository size.

2. ProjectCacheWorker will recalculate the commit count, repository
   size, then refresh a specific set of caches based on the list of
   files changed in a push payload.

This requires a bunch of changes to the various methods that may be
cached. For one, data should not be cached if a branch used or the
entire repository does not exist. To prevent all these methods from
handling this manually this is taken care of in
Repository#cache_method_output. Some methods still manually check for
the existence of a repository but this result is also cached.

With selective flushing implemented ProjectCacheWorker no longer uses an
exclusive lease for all of its work. Instead this worker only uses a
lease to limit the number of times the repository size is updated as
this is a fairly expensive operation.

Do not create TODO when build is allowed to fail

## What does this MR do?

Do not create a TODO when build that failed is allowed to fail.

## Does this MR meet the acceptance criteria?

- [x] [Changelog entry](https://docs.gitlab.com/ce/development/changelog.html) 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

## What are the relevant issue numbers?

Closes #22280

See merge request !7618

Also allow merge request to be merged with skipped pipeline and the
"only allow merge when pipeline is green" feature enabled
Signed-off-by: Rémy Coutable <remy@rymai.me>

Backport some changes done from Time Tracking feature in EE.

See merge request !7604

Grapify the users API

Certain endpoints return different entities based on which user issues the request. Right now, I am not aware how to specify multiple entities as part of the description block of the endpoint. @rymai Do you know something about that.

## What are the relevant issue numbers?

Related to #22928

See merge request !7147

Remove bashism from scripts/prepare_build.sh

Make `scripts/prepare_build.sh` an sh, rather than bash, script

Write once, run everywhere. Even alpine.

See merge request !7561

Initializing Rugged objects is way too expensive just to check if a
repository exists. Even though we cache this data once in a while we
have to refresh this. On GitLab.com we have seen Repository#exists?
taking up to _1 minute_ to complete in the absolute worst case, though
usually it sits around a second or so.

Using File.exist? to instead check if $GIT_DIR/refs exists is a much
faster way of checking if a repository was initialized properly.

This moves the logic of detecting special repository files (e.g. a
README or a Koding configuration file) to a single class:
Gitlab::FileDetector. Moving this logic into a single place allows this
to be re-used more easily.

This commit also changes Repository#gitlab_ci_yaml so that its cached
similar to other data (e.g. the Koding configuration file).

Add constraints to group id in routing

To prevent 404 when visit page like https://gitlab.com/groups/group.with.dot/activity

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/24622

See merge request !7614

Add API endpoint for creating a pipeline

Fixes #23468

See merge request !7209

Allow to block JIRA events for commits and merge requests

implements #5541 

See merge request !7469

Remove unnecessary self from user model

self keyword nod needed. Code is more clean and understandable. https://github.com/bbatsov/ruby-style-guide#no-self-unless-required

See merge request !7551

Use build instead create in BroadcastMessage model spec

See merge request !7592

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Fixes regression causing an error message to appear when user first enters the Merge Request form.

Closes #24627

See merge request !7599

Revert signin tab order fix.

The history: 

> 1. @sytses created this: https://gitlab.com/gitlab-org/gitlab-ce/issues/23279
> 2. The fix was submitted here: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/6867
> 3. I [made](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/6867#note_16993324) the same observation you did after it was merged
4. A long discussion about accessibility and UX followed, and we decided to revert all changes (https://gitlab.com/gitlab-org/gitlab-ce/issues/23698).

## Screenshots (if relevant)

![2016-11-17_20.55.22](/uploads/c81b0bbe0cd08747124531778af6273f/2016-11-17_20.55.22.gif)

## Does this MR meet the acceptance criteria?

- [x] [Changelog entry](https://docs.gitlab.com/ce/development/changelog.html) added
- [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/23698

See merge request !7538

Remove duplicate sidekiq throttling parameters

Improves `db/schema` after merging https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/7015.

cc @grzesiek @filipa

See merge request !7603

Fix a typo in gitlab_flow.md ('munch'->'much')

See merge request !7595

Fix wrong link

Not a big one, just fix a wrong link to internal page.

See merge request !7597

Fix broken merge request widget spec

## What does this MR do?
Converts the invalid es6 syntax of the merge_request_widget_spec which is actually causing the spec not to run through teaspoon

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

## Why was this MR needed?
Get specs working again

## Screenshots (if relevant)
None

## Does this MR meet the acceptance criteria?

- [ ] [Changelog entry](https://docs.gitlab.com/ce/development/changelog.html) 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?
Closes #24673

See merge request !7594

Resolve "Display "folders" for environments"

## What does this MR do?
Adds the ability to show the grouped environments inside "folders".
Adds several reusable vue components in order to accomplish the recursive tree data structure presented.

For the individual components, Jasmine tests were added.
For the ones that depend of an API response, rspec tests are used.


## Screenshots (if relevant)
![Screen_Shot_2016-11-16_at_02.00.13](/uploads/1278012c8639b999b53f080728d283e1/Screen_Shot_2016-11-16_at_02.00.13.png)
![Screen_Shot_2016-11-16_at_02.00.25](/uploads/a3d65416ddb553e1b8f0f4c8897a75dc/Screen_Shot_2016-11-16_at_02.00.25.png)
![Screen_Shot_2016-10-17_at_16.08.50](/uploads/af63efe1d2cbd5fc069408622ef4b607/Screen_Shot_2016-10-17_at_16.08.50.png)


![environments](/uploads/b5a1801766d82ab176fc60f96b6968cb/environments.gif)
## Does this MR meet the acceptance criteria?

- [x] [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
  - [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 #22539

See merge request !7015

Merge request !7163 caused an error message to appear on the Merge
Request form when it was first loaded by the user. This commit fixes
that regression bug.