Disable mirror workers for Geo secondaries

See merge request !1671

CE upstream: Thursday

Closes #2251 and gitaly#157

See merge request !1818

Fix email receiver metrics events

See merge request !1828

Remove superfluous wording on push rules

See merge request !1811

`Project#inspect` isn't very useful for examining usage of these features.

EE port of "Display slash commands outcome when previewing Markdown"

See merge request !1707

Order rejected paths like in EE

See merge request !1821

Create new branch from issue page

See merge request !1808

Revert "Shorten and improve some job names"

See merge request !1825

This reverts commit f2fc716c

Added EOF newline to static-analysis script

See merge request !1824

Timecop.freeze in a before block should always be paired with Timecop.return
in an after block

restrict individual approvers to project members

Closes #1593

See merge request !1691

Resolve "Improve UX of Geo admin page"

Closes #1975

See merge request !1777

Customers using remote mirrors would see errors in their Sidekiq logs after
the worker attempted to update its database.  We should disable this until we
have a better way of synching the mirror workers.

See #1598

Merge branch 'nt/ce-to-ee-thursday' of https://gitlab.com/gitlab-org/gitlab-ee into nt/ce-to-ee-thursday

* 'nt/ce-to-ee-thursday' of https://gitlab.com/gitlab-org/gitlab-ee: (424 commits)
  Move api lint out of static analysis job
  Fix conflicts
  Fix conflicts in environment Vue component
  Pipeline table mini graph dropdown remains open when table is refreshed
  Enable elasticsearch instrumentation in the Rails log
  Merge branch '31647-fix-snippet-content_html' into 'master'
  Adds off for event hub
  Fix missing project attributes used by the Import/Export feature
  Compile gitlab-shell go executables
  Disable the MR feature after creating the MRs in ES GlobalSearch specs
  Add spec for SD issue created by alias
  Allow to create new branch and empty WIP merge request from issue page
  Convert seconds to minutes and hours on chat notifations
  Disable navigation to Pages config if Pages is disabled
  Use the be_within matcher to compare time with RSpec
  Add CHANGELOG
  Improve log message when something went wrong syncing repository
  Backfill projects where the last attempt to backfill failed
  Add breadcrumb, build header and pipelines submenu to artifacts browser
  Update todos screenshots
  ...

Backfill projects where the last attempt failed

Closes #1965

See merge request !1785

To avoid merge conflicts

update Approval docs and screenshot
don't pass unused var to getApprovers

Move api lint out of static analysis job

See merge request !1792

Enable elasticsearch instrumentation in the Rails log

Closes #2278

See merge request !1744