Rename "Slash commands" to "Quick actions" -- EE merge edition

Closes gitlab-ce#27070

See merge request !2012

set ENV['prometheus_multiproc_dir'] in config/boot.rb instead of config.ru

See merge request !2151

5862fd13 introduced a change that caused the
`export_csv` controller action to try to load an issue from a missing :id
parameter.

Backport merge_params.html.haml conflict comment

See merge request !2120

Fix https://gitlab.com/gitlab-org/gitlab-ce/issues/27070

Deprecate "chat commands" in favor of "slash commands"

We looked for things like:

 - `slash commmand`
 - `slash_command`
 - `slash-command`
 - `SlashCommand`

Conflicts:
	doc/user/project/slash_commands.md
	doc/workflow/time_tracking.md

EE: Fix raw_path with the new job path, rename builds to jobs in test

See merge request !2129

EE: Use the same way to invalidate cache from EE

See merge request !2134

[ci skip]

[ci skip]

Adding Benefit and Qualification sections to EE products

See merge request !2110

Fix transient error with filtered search lazy author/assignee tokens

Closes #2661

See merge request !2142

Fix https://gitlab.com/gitlab-org/gitlab-ee/issues/2661

CE Upstream - Monday

Closes omnibus-gitlab#1714, gitlab-ce#32587, and gitlab-ce#32218

See merge request !2107

Service hostname also include registry name, when using non Docker Hub registry.

See merge request !11729

Fix file diff title and renames alignment in discussions

Closes #31782

See merge request !12169

Stop using deprecated `path` field on Gitaly messages

See merge request !12112

#13336 - display multiple messages in both the UI and git output

Closes #13336

See merge request !11113