Merge branch 'frozen-string-enable-app-models' into 'master'

Enable frozen string in app/models/*.rb

See merge request gitlab-org/gitlab-ce!20851

app/models/label_link.rb

+# frozen_string_literal: true
+
 class LabelLink < ActiveRecord::Base
   include Importable

app/models/label_priority.rb

+# frozen_string_literal: true
+
 class LabelPriority < ActiveRecord::Base
   belongs_to :project
   belongs_to :label

app/models/legacy_diff_discussion.rb

+# frozen_string_literal: true
+
 # A discussion on merge request or commit diffs consisting of `LegacyDiffNote` notes.
 #
 # All new diff discussions are of the type `DiffDiscussion`, but any diff discussions created

app/models/legacy_diff_note.rb

+# frozen_string_literal: true
+
 # A note on merge request or commit diffs, using the legacy implementation.
 #
 # All new diff notes are of the type `DiffNote`, but any diff notes created

app/models/lfs_file_lock.rb

+# frozen_string_literal: true
+
 class LfsFileLock < ActiveRecord::Base
   belongs_to :project
   belongs_to :user

app/models/lfs_object.rb

+# frozen_string_literal: true
+
 class LfsObject < ActiveRecord::Base
   include AfterCommitQueue
   include ObjectStorage::BackgroundMove

app/models/lfs_objects_project.rb

+# frozen_string_literal: true
+
 class LfsObjectsProject < ActiveRecord::Base
   belongs_to :project
   belongs_to :lfs_object

app/models/list.rb

+# frozen_string_literal: true
+
 class List < ActiveRecord::Base
   belongs_to :board
   belongs_to :label

app/models/member.rb

+# frozen_string_literal: true
+
 class Member < ActiveRecord::Base
   include AfterCommitQueue
   include Sortable

app/models/merge_request.rb

+# frozen_string_literal: true
+
 class MergeRequest < ActiveRecord::Base
   include AtomicInternalId
   include IidRoutes

app/models/merge_request_diff.rb

+# frozen_string_literal: true
+
 class MergeRequestDiff < ActiveRecord::Base
   include Sortable
   include Importable

app/models/merge_request_diff_commit.rb

+# frozen_string_literal: true
+
 class MergeRequestDiffCommit < ActiveRecord::Base
   include ShaAttribute

app/models/merge_request_diff_file.rb

+# frozen_string_literal: true
+
 class MergeRequestDiffFile < ActiveRecord::Base
   include Gitlab::EncodingHelper
   include DiffFile

app/models/merge_requests_closing_issues.rb

+# frozen_string_literal: true
+
 class MergeRequestsClosingIssues < ActiveRecord::Base
   belongs_to :merge_request
   belongs_to :issue

app/models/milestone.rb

+# frozen_string_literal: true
+
 class Milestone < ActiveRecord::Base
   # Represents a "No Milestone" state used for filtering Issues and Merge
   # Requests that have no milestone assigned.

app/models/namespace.rb

+# frozen_string_literal: true
+
 class Namespace < ActiveRecord::Base
   include CacheMarkdownField
   include Sortable

app/models/note.rb

+# frozen_string_literal: true
+
 # A note on the root of an issue, merge request, commit, or snippet.
 #
 # A note of this type is never resolvable.

app/models/note_diff_file.rb

+# frozen_string_literal: true
+
 class NoteDiffFile < ActiveRecord::Base
   include DiffFile

app/models/notification_reason.rb

+# frozen_string_literal: true
+
 # Holds reasons for a notification to have been sent as well as a priority list to select which reason to use
 # above the rest
 class NotificationReason

app/models/notification_recipient.rb

+# frozen_string_literal: true
+
 class NotificationRecipient
   include Gitlab::Utils::StrongMemoize