Added bookmarks

• Added:
- bookmarks for GabPRO members only
- migration for creation of StatusBookmarks
- all necessary routes, controllers
- redux for adding, removing, fetching and displaying bookmarks
- bookmark icon
- doorkeeper scopes
- backend and frontend support

Bookmarks behave like likes/favorites, except they aren't shared with other users and do not have an associated counter.

dfea7368c9

app/serializers/rest/status_serializer.rb

@@ -9,6 +9,7 @@ class REST::StatusSerializer < ActiveModel::Serializer
   attribute :favourited, if: :current_user?
   attribute :reblogged, if: :current_user?
   attribute :muted, if: :current_user?
+  attribute :bookmarked, if: :current_user?
   attribute :pinned, if: :pinnable?
 
   attribute :content, unless: :source_requested?
@@ -117,6 +118,14 @@ class REST::StatusSerializer < ActiveModel::Serializer
     end
   end
 
+  def bookmarked
+    if instance_options && instance_options[:relationships]
+      instance_options[:relationships].bookmarks_map[object.id] || false
+    else
+      current_user.account.bookmarked?(object)
+    end
+  end
+
   def pinned
     if instance_options && instance_options[:relationships]
       instance_options[:relationships].pins_map[object.id] || false