1. Allow subscribing (the current user) to a label

- Refactor the `Subscription` coffeescript class
  - The main change is that it accepts a container, and conducts all
    DOM queries within its scope. We need this because the labels
    page has multiple instances of `Subscription` on the same page.

2. Creating an issue or MR with labels notifies users subscribed to those labels

- Label `has_many` subscribers through subscriptions.

3. Adding a label to an issue or MR notifies users subscribed to those labels

- This only applies to subscribers of the label that has just been
  added, not all labels for the issue.

Ignore eager loading in Project.search UNION

This fixes issues such as filtering groups by names on pages such as
https://gitlab.com/dashboard/groups.

See merge request !3229

Set link title for todos. Closes #14042

See merge request !3161

See merge request !3218

Fix typo in Ruby CI test and deploy example

[skip ci]

See merge request !3201

Revert the avatar cropping feature

Reverts !2951 since the added 'mini_magick' dependency should be replaced by client-side croppping

See merge request !3223

Fix double borders around the CI status

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/14281
Introduced by https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/2760#note_4238291

See merge request !3224

The queries that are UNION'd together don't need any eager loading
(since we really only use the resulting SQL instead of having
ActiveRecord actually run the queries). By dropping any eager loaded
associations queries such as the following work instead of producing a
SQL error:

    Project.all.includes(:namespace).search('foo')

Fixes "iid of max iid" in Issuable sidebar for merged MR


Fixes #13928.

See merge request !3046

Ensure "new SSH key" email do not ends up as dead Sidekiq jobs

Related to #2235.

This is done by:
1. Delaying the notification sending after the SSH key is commited in DB
2. Gracefully exit the mailer method if the record cannot be found

/cc @dblessing @stanhu @DouweM 

See merge request !3163

bundle:audit job only on master

As discussed in !3215

See merge request !3227

Applications tab on profile settings

Closes #13855

See merge request !3031

This reverts commit 01160fc0, reversing
changes made to 4bff9daf.

Run 'git gc' every 10 pushes

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/14250

Fixes https://gitlab.com/gitlab-org/gitlab-ce/issues/12620

Fixes https://gitlab.com/gitlab-org/gitlab-ee/issues/254

Associated gitlab-shell MR:
https://gitlab.com/gitlab-org/gitlab-shell/merge_requests/44

See merge request !3206

Windows CI support is full since Runner v1.0.0



See merge request !3219

[ci skip]

Related to #2235.

This is done by:
1. Delaying the notification sending after the SSH key is commited in DB
2. Gracefully exit the mailer method if the record cannot be found

This solves the problem with caching the nil value with instance variable.
Without this the every time we ask for external_issue_tracker we built AR and potentially do SQL query

Fix bug with JS error from dropdowns in filter area

Fixes:

![consoleerror](/uploads/0fa19a943050baac855c9e6f896ea941/consoleerror.png)

This error is not a logged issue yet.

Error when turbolinks fetches a new page, `setup()` was not run. 

Signed-off-by: Jacob Schatz jschatz@gitlab.com

cc @iamphill @alfredo1 

See merge request !3216

Redesign project tabs on group page
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>


Final step to fix #13480 

See merge request !3209

Be more intelligent about sanitizing links with unsafe protocols

This prevents false matches on relative links like
`[database](database.md)`.

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/14220

See merge request !3210

Cleanup Ci::Commit, Ci::Build and CommitStatus views

This MR tries to do first sweep of cleanups to Ci::Commit and
Ci::Build objects removing all view-related functions and fixing the
API from other side.

Fixes: https://gitlab.com/gitlab-org/gitlab-ce/issues/6046

See merge request !2760

Remove allowed to fail by ignoring RedCloth

Having `Allowed to fail` jobs will only make sure we'll miss something
when it should fail, so I excluded a known issue which has been an
issue a long time now.

Now when this build is not green we know we should look at it and pay
attention.

See merge request !3215

Bump gitlab_git to 9.0.3



See merge request !3213

This prevents false matches on relative links like
`[database](database.md)`.

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/14220

Fixes issue with unassigned not working in dropdown

Also allowed issues to be bulk unassigned

See merge request !3211

Bump Capybara gem to 2.6.2

2.6.2 has new selectors, such as `have_current_path`, that may be useful.


See merge request !3200

New CI YAML features

This introduces a couple of small `.gitlab-ci.yml` features:

1. Documentation for: Allow to use YAML anchors when parsing the `.gitlab-ci.yml`: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/2958
2. Ignore jobs that start with `.`
3. Allow to pass name of created artifacts archive in `.gitlab-ci.yml`
4. Allow to define on which builds the current one depends on

These are really small changes so it makes not sense to create a separate merge requests for them.

@axil Could you review the documentation part?

The implementation on GitLab Runner side: https://gitlab.com/gitlab-org/gitlab-ci-multi-runner/merge_requests/113.

Fixes: https://gitlab.com/gitlab-org/gitlab-ce/issues/13755 https://gitlab.com/gitlab-org/gitlab-ce/issues/14211 https://gitlab.com/gitlab-org/gitlab-ce/issues/3423

cc @grzesiek @axil @DouweM 


See merge request !3182

Also allowed issues to be bulk unassigned

Improve award emoji test reliability and eliminate sleeps

Closes #14129

See merge request !3195

Left sidebar overlaps the content on mobile devices

On mobile, the navigation sidebar will always revert to being hidden. When clicking the toggle, it will then go over the top of the content - rather than push the content.

See merge request !3087

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