Merge branch 'ee-43681-display-last-activity-and-created-at-datetimes-for-users-in-admin-users' into 'master'

EE Resolve "Display last activity and created at datetimes for users"

Closes gitlab-ce#43681

See merge request gitlab-org/gitlab-ee!9100

Resolve "Support alerts from external Prometheus servers" ~frontend

Closes #9258

See merge request gitlab-org/gitlab-ee!9239

Update version column on updated and installed

See merge request gitlab-org/gitlab-ee!9367

Fix comment typo in feature proposal issue template

See merge request gitlab-org/gitlab-ce!24927

All applications except for Jupyter have the same #set_initial_status,
so create a new shared example which we include in all application specs
except for juptyer_spec. Juptyer specs already have specs for it's
version of #set_initial_status

Introduce Internal API for searching environment names

See merge request gitlab-org/gitlab-ce!24923

Add reply to notes to turn into discussions

See merge request gitlab-org/gitlab-ce!24480

EE Port - Show reply button in comments

See merge request gitlab-org/gitlab-ee!9352

The columns 'Created on' and 'Last activity' have been
added to the admin -> users view.

Sorting options have also been added for last activity
and the search bar has been moved to match the issues
page.

This makes this consistent with :updated. And also avoids a potential
issue where an install errors which means that that the recorded version
won't necessarily reflect the version that is actually installed.

Convert noteable_note_spec.js to Vue test utils

See merge request gitlab-org/gitlab-ce!24801

Remove workaround for search box icons in Safari

Closes gitlab-ui#156 and #9240

See merge request gitlab-org/gitlab-ee!9439

Modify Serverless Listing

See merge request gitlab-org/gitlab-ce!24072

Add metrics chart tooltips

See merge request gitlab-org/gitlab-ce!24651

Note: updating version column after :updating is not ideal in the
updating -> update_erroed case. This will mean that the application now
records the version as the version that failed to upgrade, not the
version that it is currently on.

As we are now setting version on :updated for all applications now.

Add square css class

See merge request gitlab-org/gitlab-ce!24875

Add changelog

Rename word to query

User hash for limit

Do not allow control limit

Rename pluck names and add more specs

Resolve "Empty states for profile page"

Closes #28500

See merge request gitlab-org/gitlab-ce!24549

Fix regression in ElasticSearch with blob `text?` method

See merge request gitlab-org/gitlab-ee!9418

Allow merge request diffs to be placed into an object store

Closes #52568

See merge request gitlab-org/gitlab-ce!24276

EE port of "Allow  merge request diffs to be placed into an object store"

See merge request gitlab-org/gitlab-ee!9401

Adds validation for schema_migration prior to truncate.

See merge request gitlab-org/gitlab-ce!6459

update js_regex 2.2.1 -> 3.1

See merge request gitlab-org/gitlab-ce!24433

This adds a conditional statement before truncating the
`schema_migrations` table.

This comit also ports this code to Rails 5.

Merge dev.gitlab.org master into GitLab.com master

Closes #54721, #56663, #2779, #2776, #2772, #2783, #2766, #2784, #2760, #2775, #2777, #2767, #2786, #2780, and #56860

See merge request gitlab-org/gitlab-ce!24935