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

Chat slash commands show labels correctly

See merge request !1280

[Elasticsearch] More efficient search

See merge request !1282

[ci skip]

[ci skip]

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

Backport "Change branch_name param to branch throughout V4 API"

See merge request !1276

# Conflicts:
#   doc/api/v3_to_v4.md

[ci skip]
Signed-off-by: Rémy Coutable <remy@rymai.me>

Update Elasticsearch to 5.1

Closes #1253

See merge request !1059

API: Make subscription API more RESTfuL

See merge request !1274

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

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

Fix form response errors not shown for create label dropdown.

See merge request !9058

Update documentation

Add filtered search to MR page

See merge request !1243

Add filtered search to MR page

Closes #27131

See merge request !9284

No more and/or

See merge request !9428

Copy data before compression to prevent 'file changed as we read it'

Closes #26881

See merge request !8728

#26703 change todos counter position & format ( for large counts )

Closes #26703

See merge request !9171

# This is the 1st commit message:

Add `copy` backup strategy to combat file changed errors

The backup Rake task used to stream data directly from the live
data directory into the backup. Under many circumstances this worked
OK. However, really active instances would experience a 'file changed
as we read it' error - especially with data like the registry. This
now copies the data first, then compresses it. It will take a bit
more disk space while the backup is in progress, but it's a
necessary thing.

# The commit message #2 will be skipped:

#	Add env var

Redo internals of Incoming Mail Support

See merge request !9385

Fix the commit search UI

Closes gitlab-ee#1765

See merge request !9411

Don't try to update a project's external service caches on a secondary Geo node

See merge request !1273

Squash default

See merge request !1272

Upgrade Rails to 4.2.8

See merge request !9419

Rename retry failed button on pipeline page to just retry

See merge request !9369

Add user deletion permission check in `Users::DestroyService`

See merge request !8974

git-annex may add a pre-commit hook on the GitLab server, which will
cause the commit to fail unless git-annex is configured. As there
shouldn't be one on the server normally, ignore all commit hooks.

For large repos, the checkout as part of creating a worktree can be very
expensive. This can be so expensive that processes get 'stuck' on
GitLab.com.

To make this cheaper, configure sparse checkout for squash worktrees so
that we only check out the files that were changed in the target
branch (new files don't need to be included).

Also add specs to cover the case where only new files are added, and the
case where the diff isn't shown in the merge request because it's too
large.

Changed coverage reg expression placeholder text to be more like a placeholder

Closes #28389

See merge request !9407