* upstream/master: (89 commits)
  Revert "Merge branch 'grpc-1.3.4' into 'master'"
  Return nil when looking up config for unknown LDAP provider
  Avoid crash when trying to parse string with invalid UTF-8 sequence
  Enable Gitaly by default in GitLab 9.3
  Don’t create comment on JIRA if link already exists
  Disable sub_group_issuables_spec.rb for mysql
  Fix math rendering on blob pages
  Add changelog
  Don't allow to pass a user to ProjectWiki#http_url_to_repo
  Revert "Merge branch '1937-https-clone-url-username' into 'master'"
  Fix bottom padding for build page
  Fix /unsubscribe slash command creating extra todos
  Fix omniauth-google-oauth2 dependencies in Gemfile.lock
  Update looks job log
  'New issue'/'New merge request' dropdowns should show only projects with issues/merge requests feature enabled
  Fix spec for Members::AuthorizedDestroyService
  31616-add-uptime-of-gitlab-instance-in-admin-area
  Set head pipeline when creating merge requests
  Create a separate helper to check if we show particular tab on a search page
  Add performance deltas between app deployments on Merge Request widget
  ...

Return nil when looking up config for unknown LDAP provider

Closes #29342

See merge request !11804

Revert "Merge branch 'grpc-1.3.4' into 'master'"

See merge request !11813

This reverts merge request !11645

Resolve "Allow to disable username on checkout url"

Closes #30410 and #30174

See merge request !11792

Remove extra bottom padding on Job log page

Closes #30502

See merge request !11791

Enable Gitaly by default in GitLab 9.3

Closes gitaly#242

See merge request !11796

Avoid crash when trying to parse string with invalid UTF-8 sequence

See merge request !11770

Don’t create comment on JIRA if link already exists

Closes #25373

See merge request !11485

`canEdit` changes for conditional remove button on filtered search -- EE backport

Closes gitlab-ee#2433

See merge request !11696

Disable sub_group_issuables_spec.rb for mysql

Closes #33057

See merge request !11795

Make `ActiveRecord::Migrator` idempotent again in test environment

Closes #33030

See merge request !11762

Fix alignment of tree symbols in merge requests

Closes #29590

See merge request !11761

Merge branch '19107-404-when-creating-new-milestone-or-issue-for-project-that-has-issues-disabled' into 'master'

'New issue'/'New merge request' dropdowns should show only projects with issues/merge requests feature enabled

Closes #19107

See merge request !11754

Merge branch '33048-markdown-rendering-of-md-files-has-ceased-to-display-latex-equations' into 'master'

Fix math rendering on blob pages

Closes #33048

See merge request !11793

Merge branch '33032-invalid-you-directly-addressed-yourself-todo-when-using-unsubscribe' into 'master'

Resolve "Invalid 'You directly addressed yourself' TODO when using `/unsubscribe`"

Closes #33032

See merge request !11788

Fix omniauth-google-oauth2 dependencies in Gemfile.lock

Closes #32653

See merge request !11787

`renderGFM` adds the correct syntax highlighting class and triggers KaTeX if
required.

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

This partially reverts be25bbc4.
Signed-off-by: Rémy Coutable <remy@rymai.me>

This reverts commit c425f366, reversing
changes made to 82f6c0f5.
Signed-off-by: Rémy Coutable <remy@rymai.me>

Use 'sudo bash' when adding nodesource repository

See merge request !10527

Resolve "Browser notifications for pipeline running in a MR is gone"

Closes #32916

See merge request !11734

Set head pipeline when creating merge requests

See merge request !11669

The /unsubscribe slash command means that we check if the current user is
subscribed to the issuable without having an explicit subscription. That means
that we use the UserParser to find references to them in the notes.

The UserParser (and all parsers inheriting from BaseParser) use RequestStore to
cache ActiveRecord objects, so that we don't need to load the User object each
time, if we're parsing references a bunch of times in the same request.

However, it was always returning _all_ of the previously cached items, not just
the ones matching the IDs passed. This would mean that we did two runs through
with UserParser if you were mentioned in a comment, and then mentioned someone
else in your comment while using /unsubscribe:

1. Because /unsubscribe was used, we see if you were mentioned in any comments.
2. Because you mentioned someone, we find them - but we would also get back your
   user, even if you didn't mention yourself. This would have the effect of
   creating a mention or directly addressed todo for yourself incorrectly.

The fix is simple: only return values from the cache matching the IDs passed.

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

Update looks job log

Closes #30117

See merge request !11663

Use vue file for pipelines tables components

See merge request !11760

Fix spec for Members::AuthorizedDestroyService

See merge request !11778

Assignee dropdown does not display selected assignee

Closes #2472

See merge request !11744

Creates a mediator for pipeline details vue in order to mount several vue apps with the same data

Closes #31849

See merge request !11732