Replace the `group_hooks.feature` spinach test with an rspec analog

See merge request gitlab-org/gitlab-ee!5515

Port to EE: Include documentation about STAGING_ENABLED variable for AutoDevops

See merge request gitlab-org/gitlab-ee!5536

[ci skip]

[ci skip]

Geo: Exclude expired job artifacts from syncing and counts

Closes #5357

See merge request gitlab-org/gitlab-ee!5380

CE upstream - 2018-05-02 09:27 UTC

See merge request gitlab-org/gitlab-ee!5540

EE-Port for Emoji Sprites Optimisation

See merge request gitlab-org/gitlab-ee!5538

Resolve "The `ee-specific-lines-check` should ignore files under `ee/`"

Closes #5856

See merge request gitlab-org/gitlab-ee!5549

Adding initial outline of pgbouncer documentation

Closes omnibus-gitlab#2649

See merge request gitlab-org/gitlab-ee!5351

Make ee/spec/features/admin/admin_sends_notification_spec.rb more reliable

See merge request gitlab-org/gitlab-ee!5547

Unify app/assets/javascripts/clusters/components/application_row.vue with CE

See merge request gitlab-org/gitlab-ee!5545

reliable

Merge branch '5841-geo-basesyncservice-should-prune-the-geo-temporary-directory-before-fetching' into 'master'

Resolve "Geo: BaseSyncService should prune the @geo-temporary directory before fetching"

Closes #5841

See merge request gitlab-org/gitlab-ee!5543

Skip master for EE-specific check

See merge request gitlab-org/gitlab-ee!5542

* Add link to components in HA README
* Fix typo in pgbouncer page

master is a special case that CE master is not crafted toward
EE master, thus it could be ahead of EE master. In this case
we should compare with the merge-base, but that could make
the code unnecessarily complex and is not worth the effort.

# Conflicts:
#	app/views/groups/_group_admin_settings.html.haml
#	spec/requests/api/runner_spec.rb

[ci skip]

Replace the `admin/emails.feature` spinach test with an rspec analog

See merge request gitlab-org/gitlab-ee!5513

Replace the `admin/push_rules.feature` spinach test with an rspec analog

See merge request gitlab-org/gitlab-ee!5512

Resolve "Create a new job to check that EE-specific lines are minimal"

Closes #5682

See merge request gitlab-org/gitlab-ee!5404

Replace the `project/source/markdown_render.feature` spinach test with an rspec analog

See merge request gitlab-org/gitlab-ce!18525

[Rails5] Fix spec/services/applications/create_service_spec.rb

See merge request gitlab-org/gitlab-ce!18665

[Rails5] Fix spec/models/notification_setting_spec.rb

See merge request gitlab-org/gitlab-ce!18664

[Rails5] Fix enum question mark methods

See merge request gitlab-org/gitlab-ce!18662

Display and revoke active sessions

See merge request gitlab-org/gitlab-ce!17867

[Rails5] Fix `undefined method 'downcase'` errors in requests specs

See merge request gitlab-org/gitlab-ce!18645