List issues with another milestone that has a matching board list label

Closes #1937

See merge request !1468

Fixed filter by label for issues CSV export

Closes #1926

See merge request !1444

Prevented Issues CSV export failing when author is nil

Closes #1936

See merge request !1454

Documentation updates for new Geo features

See merge request !1470

Rework ES permissions check

See merge request !507

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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

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