Removes confusing/unnecessary checkboxes when trying to configure an
integration. If there is only one supported event we don't need to
allow these to be individually disabled since the integration can be
disabled instead.

E.g. Project Integrations for GitHub, Bugzilla, Asana, Pipeline emails and Gemnasium

Allows integrations to override which triggers are configurable

Fixes attempts to update a service integration which had `can_test?`
set to true but validations were causing the "Test and save changes"
button to return "Something went wrong on our end."

Removes references to index action left from 0af99433

Adds detailed_status to pipeline hook data
Adds detailed_description option for Services
Integration edit page renders 404 if a service is disabled

Remove wrong assumption about Runners cache GC

See merge request gitlab-org/gitlab-ce!17598

Move Ruby endpoints to OPT_OUT

See merge request gitlab-org/gitlab-ce!17561

Backport of "Geo: Ignore remote stored objects when calculating counts"

See merge request gitlab-org/gitlab-ce!17581

add nginx_status monitoring details

See merge request gitlab-org/gitlab-ce!17596

Part of: gitlab-org/gitaly#476

Part of: gitlab-org/gitaly#476

Part of: gitlab-org/gitlab-ce!17561

Part of: gitlab-org/gitaly#540

Part of: gitlab-org/gitaly#546

Part of: gitlab-org/gitaly#779

Part of: gitlab-org/gitaly#541

Part of gitlab-org/gitaly#324

Use persisted/memoized value for MRs sha's instead of doing git lookups

See merge request gitlab-org/gitlab-ce!17555

Add discussion API

See merge request gitlab-org/gitlab-ce!17510

Resolve "Update language about version check in admin settings and docs"

Closes #43486

See merge request gitlab-org/gitlab-ce!17535

Add CommonMark markdown engine

See merge request gitlab-org/gitlab-ce!14835

Keep track of projects a user interacted with

Closes #43460

See merge request gitlab-org/gitlab-ce!17327

https://gitlab.com/gitlab-org/gitlab-ce/issues/41249#note_60629323

Show plugins list on system hooks page

Closes #40812

See merge request gitlab-org/gitlab-ce!17518

* adds basic discussions API for issues and snippets
* reorganizes notes specs (so same tests can be used for all noteable types - issues, MRs, snippets)

Unify deployment_platform interface with EE

See merge request gitlab-org/gitlab-ce!17594

Fix group boards migration name

See merge request gitlab-org/gitlab-ce!17592

Count discussions on issues and merge requests as contributions for the contributions calendar

See merge request gitlab-org/gitlab-ce!17557

Resolve "Update clipboard button component not to render default css classes"

Closes #43502

See merge request gitlab-org/gitlab-ce!17529

Bump Gitlab Shell to v6.0.4

Closes #43739

See merge request gitlab-org/gitlab-ce!17582

This had the same name in EE, so give it a different name in CE.

CI charts now include the current day

Closes #42921

See merge request gitlab-org/gitlab-ce!17032

Part of gitlab-org/gitaly#616

Make --prune a configurable parameter in fetching a git remote

See merge request gitlab-org/gitlab-ce!17346

The MergeRequestWidgetEntity is used a lot in AJAX requests, and shaving
that git operation will hopefully translate in a performance improvement

Remove common_vue bundle

See merge request gitlab-org/gitlab-ce!17551