Clean up the GPG docs and mention push rules

Closes gitlab-ce#42363

See merge request gitlab-org/gitlab-ee!8975

Fix clone URL not showing if protocol is HTTPS

Closes #55896

See merge request gitlab-org/gitlab-ce!24131

Resolve "Add markdown editing buttons to the file editor"

Closes #27861

See merge request gitlab-org/gitlab-ce!23480

Add Knative metrics to Prometheus

See merge request gitlab-org/gitlab-ce!23972

Geo: Ignore invalid attributes when updating Geo node status

Closes #8966

See merge request gitlab-org/gitlab-ee!8957

GitLab 11.6.2 fixed the case for HTTP. However, HTTPS still did
not work because the protocol returned to `http_enabled?`
was the actual protocol in use (e.g. `https` instead of `http`).

Closes https://gitlab.com/gitlab-org/gitlab-ce/issues/55896

Geo: Fix metrics updates when secondary nodes are cached

Closes #9000

See merge request gitlab-org/gitlab-ee!8981

Refactor tracing settings

See merge request gitlab-org/gitlab-ee!8983

Added Comment to user avatar Image, Changed Fixtures to created ones, added shadow color

See merge request gitlab-org/gitlab-ce!23768

If replication has not caught up properly on the secondary,
it was possible for a primary Geo node to attempt an update
of the GeoNodeStatus entry with a `nil` ID, resulting
in an Error 500.

We handle this in two ways:

1. On the primary, ignore `id` and other unknown attributes.
2. On the secondary, never send `id`.

Closes https://gitlab.com/gitlab-org/gitlab-ee/issues/8966

Due to https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/8802,
`Gitlab::Geo.secondary_nodes` can return an Array instead of an
ActiveRecord relation if the value is retrieved from the cache.  Fix
this by using `each` instead of `find_each`, since loading a few GeoNode
records into memory shouldn't be a big deal.

Closes https://gitlab.com/gitlab-org/gitlab-ee/issues/9000

Fix missing QA selector in note_form.vue

Closes #9033

See merge request gitlab-org/gitlab-ee!9010

Integrate mobile CSS framework into specific frameworks

Closes #54386

See merge request gitlab-org/gitlab-ce!23301

Force popover-header to size 14px instead of rems

Closes gitlab-ee#8941

See merge request gitlab-org/gitlab-ce!24065

https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/22985
was merged 3 hours ago, but the CE->EE merge in
04a8d3aa dropped the changes in EE because of conflicts.

Restore this selector so master is no longer broken.

Closes https://gitlab.com/gitlab-org/gitlab-ee/issues/9033

Remove dash on issue weight for unauthorized users

Closes #8888

See merge request gitlab-org/gitlab-ee!8882

CE Port of "(Part 1) FE multiple approval rules settings - empty state"

See merge request gitlab-org/gitlab-ce!24087

Add rel=me to user's website link

See merge request gitlab-org/gitlab-ce!24089

* Add Projects::Operations::UpdateService
* Remove EE::TracingSettingService

rel=me links allow cross-linking of user's identities. This behavior is
used by software to determine if user controls profiles on two different
sites. For example Mastodon uses it to display verified badge on links.

Both Twitter and GitHub automatically add rel=me to links added to
users' profiles.

See: https://www.zylstra.org/blog/2018/10/mastodon-rel-me/
See: http://microformats.org/wiki/rel-me

Drop Webhooks from project import/export config

Closes #53513

See merge request gitlab-org/gitlab-ce!24121

Add JSON responder at `#index` endpoint in feature flag controller

See merge request gitlab-org/gitlab-ee!9004

Remove unnecessary top margin in modal header titles

Closes #55883

See merge request gitlab-org/gitlab-ce!24108