Add option to start a new resolvable discussion in an MR

Closes #24378

See merge request !7527

Update rubocop-rspec 1.12.0 -> 1.15.0

See merge request !10561

Don't show Copy contents button on Blame page

See merge request !10560

Clarify what an MR needs to be 'with' a maintainer

See merge request !10544

Give explicit height to SVG icons for Safari

See merge request !10550

Wait for AJAX requests to complete so they don't blow up if they are only handle…

Closes #30633

See merge request !10559

Add indication for closed or merged issuables in GFM

Closes #1369

See merge request !9462

Put back usernames in activity and profile feed

See merge request !10539

Add rake task that prints TOML storage configuration

Closes gitaly#173

See merge request !10448

Upgrade webpack and webpack-dev-server to latest

Closes #30588 and #28438

See merge request !10552

Update MR title change icon

See merge request !10540

Wait for AJAX requests to complete so they don't blow up if they are only handled after DatabaseCleaner has already run

Revert yarn.lock file changes

Closes #30627

See merge request !10558

https://github.com/webpack/webpack-dev-server/issues/762

Remove Vue from main bundle and disable production warnings

Closes #30151

See merge request !10458

Example: for issues that are closed, the links will now show '[closed]'
following the issue number. This is done as post-process after the markdown has
been loaded from the cache as the status of the issue may change between
the cache being populated and the content being displayed.

In order to avoid N+1 queries problem when rendering notes ObjectRenderer
populates the cache of referenced issuables for all notes at once,
before the post processing phase.

As a part of this change, the Banzai BaseParser#grouped_objects_for_nodes
method has been refactored to return a Hash utilising the node itself as the
key, since this was a common pattern of usage for this method.

Merge branch 'dosuken123/gitlab-ce-2989-run-cicd-pipelines-on-a-schedule-idea1-basic-backend-implementation-with-quick-ui' into 'master'

Add "engineering" UI for Pipeline Schedule

See merge request !10533

Fix rake test to import Github repositories

See merge request !10549

Remove wrong user email from CI variables example output

See merge request !10554

[ci skip]