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

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

Add list mode to file browser in diffs

Closes #51859

See merge request gitlab-org/gitlab-ce!22191

Hotfix for Rspec and second storage

See merge request gitlab-org/gitlab-ce!22558

Bump google-protobuf to 3.6.1

See merge request gitlab-org/gitlab-ce!22559

Rails requires a second storage for testing cross shard features. Gitaly
will not boot if this second storage doesn't exist. So this will create
this storage without adding it to the list of storages that Rails knows
about.

They're no longer used and have no effect

It looks like gRPC may have worked around
https://github.com/google/protobuf/issues/4210 via
https://github.com/grpc/grpc/pull/14634.

This is needed to support Ruby 2.5
(https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/22555).