Prettify all the things (part 3)

See merge request gitlab-org/gitlab-ce!22251

Backport SSH host key detection code to CE

See merge request gitlab-org/gitlab-ce!22577

Upgrade parser gem to 2.5.1.2

See merge request gitlab-org/gitlab-ce!22590

Review apps cleanup schedule runs on master

See merge request gitlab-org/gitlab-ce!22601

Combine all datetime library functions into `datetime_utility.js`

This MR moves datetime methods from `app/assets/javascripts/lib/utils/pretty_time.js` & `app/assets/javascripts/lib/utils/datefix.js` into `app/assets/javascripts/lib/utils/datetime_utility.js`.

Closes #53055

See merge request gitlab-org/gitlab-ce!22570

Impove diff discussion data

See merge request gitlab-org/gitlab-ce!22491

This functionality is needed for SSH push mirroring support, which is a
CE feature.

Refactor Gitlab::KubeClient

Closes #52131

See merge request gitlab-org/gitlab-ce!22073

Move job stuck status to backend

Closes #52202

See merge request gitlab-org/gitlab-ce!22442

Also fixed a bug where discussions wouldn't be assigned to a line
when switching from discussion tab to changes tab

Update Android.gitlab-ci.yml template to current Android SDK version

See merge request gitlab-org/gitlab-ce!22531

Formats the file to match Prettier rules
Removes all blacklisted ESLint rules

Updates path for pretty time related methods
to import from `datetime_utility.js`

Adds methods from `app/assets/javascripts/lib/utils/pretty_time.js`
and deletes the file

Updates path for pikaday parsing methods
to import from `datetime_utility.js`

Adds methods from `app/assets/javascripts/lib/utils/datefix.js`
and deletes the files

Upgrade to Ruby 2.4.5

See merge request gitlab-org/gitlab-ce!22484

Prettify all the things (part 7)

See merge request gitlab-org/gitlab-ce!22257

Fix usage ping link

Closes #53070

See merge request gitlab-org/gitlab-ce!22545

Fix secpick to use EE and guess branch name

Closes gitlab-org/release/tasks#483

See merge request gitlab-org/gitlab-ce!22517

Backport scss changes for https://gitlab.com/gitlab-org/gitlab-ee/merge_requests/7973

See merge request gitlab-org/gitlab-ce!22503

clarify auto review apps deployment, jobs skipped by license, disabling at…

See merge request gitlab-org/gitlab-ce!22403

Also count specs in new files in Danger check

See merge request gitlab-org/gitlab-ce!22543

Remove unused rails5-variables

See merge request gitlab-org/gitlab-ce!22561

Limit flash notice width for fixed layout and improve spacing for fluid layout

Closes #32868

See merge request gitlab-org/gitlab-ce!16482

Add transparent background to markdown header tabs

Closes #53105

See merge request gitlab-org/gitlab-ce!22565

Pre-request to https://gitlab.com/gitlab-org/gitlab-ce/issues/48956

Request to be a German proofreader

See merge request gitlab-org/gitlab-ce!22337