Fix an exception seen using the online terminal

See merge request gitlab-org/gitlab-ce!18299

Resolve "Toggle file comments in merge request does not update toggle buttons"

Closes #48237 and #48537

See merge request gitlab-org/gitlab-ce!20452

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 "Add Gitaly Servers to Admin > Overview navigation menu"

Closes #49114

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

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

Fix object storage support notes

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

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

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

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

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

Fix doc for large table column rename

See merge request gitlab-org/gitlab-ce!20544

Properly handle colons in URL passwords

Closes #49080

See merge request gitlab-org/gitlab-ce!20538

Fixes a NoMethodError in the pre-receive hook: https://gitlab.com/gitlab-org/gitlab-shell/merge_requests/206

Fix ArgumentError in GitGarbageCollectWorker Sidekiq job

Closes #49096

See merge request gitlab-org/gitlab-ce!20541

When the Gitaly call failed, the exception handling failed
because `method` is expected to have a parameter.

Closes #49096

Before b46d5b13, we relied on
`Addressable::URI` to parse the username/password in a URL, but this failed
when credentials contained special characters. However, this introduced a regression
where the parsing would incorrectly truncate the password if the password had a colon.

Closes #49080

Mock timeouts and Promise in SmartInterval tests

See merge request gitlab-org/gitlab-ce!20496

This uses a similar approach in ee_specific_check.rb

* master: (38 commits)
  Update bitbucket.md to fix typo and small grammar touchups.
  Update time_helper.rb to fix output for exact minutes.
  Document update for GitLab Pages users.
  Support manually stopping any environment from the UI
  Fix link to frontend in handbook
  Shorten CHANGELOG filename to avoid breaking ecryptfs users
  Replace 48976-rails5-invalid-single-table-inheritance-type-group-is-not-a-subclass-of-gitlab-backgroundmigration-fixcrossprojectlabellinks-namespace.yml
  Fix mountComponent helper path in docs
  Fix #48537 - Update avatar only via the projects API
  Add additional headline for Adding SSH keys to GitLab
  Request to be a proofreader.
  Fix specs
  Fix search bar text input alignment
  Fix API docs on unauthenticated projects return
  Adds with_projects optional parameter to /groups/:id API endpoint
  Docs: make it clear that you need a completely separate domain for Pages
  Document that we don't want to wait in tests
  Removes unused store in diffs mr refactor Removes double export for actions in diffs module in mr refactor
  Remove useless return
  Use latest gitlab-styles
  ...