* upstream/master: (47 commits)
  Update CHANGELOG.md for 9.4.5
  Update charlock_holmes
  add a changelog entry
  switch to multi-line before block
  restructure the #new_key notification spec
  don't send devise notifications to the ghost user
  reset_delivered_emails before testing #new_key
  skip the :read_project check for new_project_member
  move the member spec to be with the other ones
  add a spec for new_group_member
  add a spec for never emailing the ghost user
  rubocop fix
  a membership with no user is always notifiable
  check notifiability for more emails
  add Member#notifiable?(type, opts)
  make NotificationRecipient a little more customizable
  Add notes about database performance for MySQL
  fix confidential border issue as well as confidential styles leaking on new MR
  Migrate force push check to Gitaly
  Add option to disable project export on instance
  ...

[ci skip]

Update charlock_holmes

See merge request !13523

Resolve "Project overview page doesn't load commit metadata for repo view"

Closes #36133

See merge request !13362

Wait for requests to finish before running the ace JS

Closes #36191

See merge request !13405

The compiler needs to be pinned to c++11, which is done by
https://github.com/brianmario/charlock_holmes/commit/51d8a2f0eb1e9d3e476482727d4122b3d11b2bc6

Without this patch it won't install charlock_holmes on newer compilers.

Increase z-index of pipeline dropdown

Closes #36325

See merge request !13507

Don't rename system when migrating from 9.x -> 9.4

Closes #35525 and #36148

See merge request !13228

Bugfix.silence on disabled notifications

Closes #23714

See merge request !13325

Add notes about database performance for MySQL

See merge request !13516

since the mere act of creating the key sends an email :|

since we're just adding them as a member, the permission may still
return false.

and add one

since this is for user invites and the like.

[ci skip]

fix confidential border issue as well as confidential styles leaking on new MR

Closes gitlab-ee#3121

See merge request !13388

Migrate force push check to Gitaly

See merge request !13406

Fixes the correct import modal window not showing

Closes #36318

See merge request !13490

Add option to disable project export on instance

See merge request !13211

Fix formatting of patch_versions.md

See merge request !13503

Better categorize test coverage results

See merge request !13485

Enable Timecop safe mode

Closes #32004

See merge request !13498

Update the markdown unconditionally since the move might have been
done before, but the markdown not updated.

This will be done in
20170717150329_enqueue_migrate_system_uploads_to_new_folder.rb
instead.