Merge branch 'master' into full-width-tables

spec/benchmarks/lib/gitlab/markdown/reference_filter_spec.rb

spec/benchmarks/models/milestone_spec.rb

spec/controllers/abuse_reports_controller_spec.rb

spec/controllers/admin/users_controller_spec.rb

spec/controllers/import/github_controller_spec.rb

spec/controllers/invites_controller_spec.rb

spec/controllers/projects/services_controller_spec.rb

spec/models/milestone_spec.rb