In API allow searching epics by title and description and sort
epics by created_at and updated_at attributes.

created_at and updated_at attributes are also exposed in epic API - if
we allow sorting by these attributes it also makes sense to include them
in API response.

Close #4732

CE upstream - 2018-02-18 06:29 UTC

See merge request gitlab-org/gitlab-ee!4587

Update issue closing pattern to be more forgiving

Closes #17500

See merge request gitlab-org/gitlab-ce!17198

CE upstream - 2018-02-17 16:53 UTC

See merge request gitlab-org/gitlab-ee!4586

Revert "Merge branch 'expired-ci-artifacts' into 'master'"

See merge request gitlab-org/gitlab-ce!17193

CE upstream - 2018-02-17 09:44 UTC

See merge request gitlab-org/gitlab-ee!4584

CE upstream - 2018-02-17 06:13 UTC

See merge request gitlab-org/gitlab-ee!4583

Don't cache a nil repository root ref to prevent caching issues

See merge request gitlab-org/gitlab-ce!17179

CE upstream - 2018-02-16 15:23 UTC

Closes gitlab-ce#42939

See merge request gitlab-org/gitlab-ee!4579

Resolve "spec/requests/api/project_import_spec.rb fails"

Closes #43345

See merge request gitlab-org/gitlab-ce!17184

Fix order dependencies in some specs

Closes #43296

See merge request gitlab-org/gitlab-ce!17189

This reverts merge request !16578

Our automatically-generated project paths are of the form project<N>. If a spec
manually specifies a project path of that form, it may conflict with the
automatically-generated paths in some circumstances.

Remove more route-based chunks from dispatcher.js

See merge request gitlab-org/gitlab-ce!16901

Resolve "Monaco service workers do not work with CDN enabled"

Closes #42641

See merge request gitlab-org/gitlab-ce!17021

Show loading button inline in MR widget

See merge request gitlab-org/gitlab-ce!17174