Update GitLab.com settings with current state

See merge request gitlab-org/gitlab-ce!18209

Cache personal projects count.

Closes #37462

See merge request gitlab-org/gitlab-ce!18197

Performance improvements warrants a changelog entry.

See merge request gitlab-org/gitlab-ce!18218

[Rails5] Update `type_cast_*_database`  methods

See merge request gitlab-org/gitlab-ce!18188

Closes #37462.

CE upstream - 2018-04-06 09:26 UTC

Closes gitlab-ce#44458

See merge request gitlab-org/gitlab-ee!5265

Resolve "Follow-up from "Refactor discussions/notes code""

Closes #44939

See merge request gitlab-org/gitlab-ce!18190

Add confirmation modal to "Change username"

Closes #41758

See merge request gitlab-org/gitlab-ce!17405

# Conflicts:
#	app/assets/javascripts/boards/filtered_search_boards.js

[ci skip]

Show issues of subgroups in group-level issue board

Closes #44270

See merge request gitlab-org/gitlab-ce!18187

EE-PORT Show issues of subgroups in group-level issue board

See merge request gitlab-org/gitlab-ee!5234

Deleting a MR you are assigned to should decrements counter

Closes #44458

See merge request gitlab-org/gitlab-ce!17951

CE upstream - 2018-04-06 08:28 UTC

Closes #5571

See merge request gitlab-org/gitlab-ee!5264

Update index.md to describe leaving out the host in prometheus['listen_address']…

See merge request gitlab-org/gitlab-ce!18207

Include subgroup issues when searching for group issues using the API

Closes #42443

See merge request gitlab-org/gitlab-ce!18068

Resolve "Access token copy to clipboard button has wrong style"

Closes #43976

See merge request gitlab-org/gitlab-ce!17978

Polish design of domain verification for Gitlab Pages

Closes #43215

See merge request gitlab-org/gitlab-ce!17767

Add system_note_icon mapping for epic actions

Closes #4262

See merge request gitlab-org/gitlab-ee!5229

CE upstream - 2018-04-06 03:43 UTC

See merge request gitlab-org/gitlab-ee!5259

Use the GitLab version as part of the appearances cache key

Closes gitlab-ee#5571

See merge request gitlab-org/gitlab-ce!18211

Override Prometheus service name to fix integration with GitLab.

Closes #45070

See merge request gitlab-org/gitlab-ce!18206

Related to #4262

# Conflicts:
#	doc/user/admin_area/settings/visibility_and_access_controls.md

[ci skip]

CE upstream - 2018-04-05 18:26 UTC

Closes #4788

See merge request gitlab-org/gitlab-ee!5257