Port of 'make-karma-fast-again' to EE

See merge request !1455

CE Backport - Add closed_at field to issues

See merge request !1452

split Geo Omnibus/source info

Closes #1908 and #1917

See merge request !1431

Handle missing tracking DB configuration on a Geo secondary node

Closes #1911

See merge request !1436

Fix weight sorting dropdown for issues

Closes #537

See merge request !1443

CE Upstream - Wednesday

Closes gitlab-ce#29425, gitlab-ce#29084, gitlab-ce#19742, and gitlab-qa#30

See merge request !1427

Do not add EE license if not set in GitLab QA tests

See merge request !1459

Fix searches within a group when using elasticsearch

Closes #1899

See merge request !1423

Merge remote-tracking branch 'origin/all-ci-offline-migrations'

See merge request !1451

Get Geo secondaries nodes statuses over AJAX

See merge request !1438

Removes issue milestone when removing from board with milestone

Closes gitlab-ce#29613

See merge request !1446

See bb0cba92Signed-off-by: Rémy Coutable <remy@rymai.me>

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

Don't try to create the index if it already exist. It's possible that a
previous rollback did not remove the index since the index is not
dropped on MySQL because MySQL would also drop the foreign key in that
case, see f67d8eb1.
Signed-off-by: Rémy Coutable <remy@rymai.me>

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

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

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

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/29613

[ci skip]

[ci skip]

Load balancing of database queries

See merge request !1283

Strip out `nil`s in the Array of Commit objects returned from `find_commits_by_message_with_elastic`

Closes #835

See merge request !1430

Port of issue boards filter bar in modal window to EE

See merge request !1435