Geo: prevent Gitlab::Git::Repository::NoRepository from stucking replication

Closes #2635

See merge request !2115

Port of mk-add-project-moved-errors-for-git to EE

See merge request !1870

Fix admin_audit_logs_spec transient

See merge request !2157

Refresh LDAP-users project authorizations on group sync

Closes #2662

See merge request !2145

Add namespace license checks for Service Desk (EEP)

Closes #2565

See merge request !2109

Don't track historical data when license is trial

See merge request !2138

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