Move merge requests EE helper methods

Closes #1721

See merge request gitlab-org/gitlab-ee!6461

CE upstream - 2018-07-11 15:22 UTC

Closes gitlab-qa#231, gitaly#798, gitaly#529, and gitaly#875

See merge request gitlab-org/gitlab-ee!6464

# Conflicts:
#	lib/gitlab/access.rb
#	spec/features/boards/sidebar_spec.rb
#	spec/features/issues/form_spec.rb
#	spec/features/projects/merge_requests/user_creates_merge_request_spec.rb
#	spec/javascripts/fixtures/projects.rb
#	spec/requests/api/protected_branches_spec.rb

[ci skip]

Milestone tests

Closes gitlab-qa#231

See merge request gitlab-org/gitlab-ce!20111

Resolve "Rename the `Master` role to `Maintainer`" Backend

Closes #42751

See merge request gitlab-org/gitlab-ce!19413

Resolve "Rename the `Master` role to `Maintainer`" Backend

See merge request gitlab-org/gitlab-ee!5993

Resolve "Add Gitaly Servers to Admin > Overview navigation menu"

Closes #49114

See merge request gitlab-org/gitlab-ce!20550

CE upstream - 2018-07-11 12:23 UTC

See merge request gitlab-org/gitlab-ee!6462

Merge branch '45592-nomethoderror-undefined-method-commit-for-nil-nilclass-in-sidekiq-caused-by-a-merge-commit-in-a-forked-project-with-upstream-project-deleted' into 'master'

Resolve "NoMethodError: undefined method `commit' for nil:NilClass in sidekiq caused by a merge commit in a forked project with upstream project deleted."

Closes #45592

See merge request gitlab-org/gitlab-ce!20534

Bump gitlab-shell to 7.1.5

See merge request gitlab-org/gitlab-ce!20545

Avoid building potential invalid environment name while seeding

See merge request gitlab-org/gitlab-ce!20523

Use gitaly 0.112.0

See merge request gitlab-org/gitlab-ce!20548

Add back MR diff deletion migration

See merge request gitlab-org/gitlab-ce!20331

Remove last Gitaly flags from Blob and Workhorse

Closes gitaly#798, gitaly#529, and gitaly#875

See merge request gitlab-org/gitlab-ce!20551

Mention admin privileges for k8s token creation

Closes #44457

See merge request gitlab-org/gitlab-ce!20517

Removed copy-pasted "Project merge method" section.

See merge request gitlab-org/gitlab-ee!5844

CE upstream - 2018-07-11 09:25 UTC

See merge request gitlab-org/gitlab-ee!6457

Fix object storage support notes

See merge request gitlab-org/gitlab-ce!20344

Fix formatting of object storage supported editions

See merge request gitlab-org/gitlab-ee!6372

Add documenation about how to active debug logging for gitlab-pages

See merge request gitlab-org/gitlab-ce!20054

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Resolve "ee_compat_check should remove `ce-` prefix or `-ce` suffix as ee-specific check"

Closes #46519

See merge request gitlab-org/gitlab-ce!20532

# Conflicts:
#	locale/gitlab.pot

[ci skip]

CE upstream - 2018-07-10 15:22 UTC

Closes gitaly#387, gitaly#874, gitaly#750, and gitaly#665

See merge request gitlab-org/gitlab-ee!6453

Add missing maximum_timeout parameter

Closes #48625

See merge request gitlab-org/gitlab-ce!20355

[Rails5] Permit concurrent loads

Closes #48263

See merge request gitlab-org/gitlab-ce!20473