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

config/routes.rb

@@ -302,6 +302,9 @@ Rails.application.routes.draw do
           resource :favourite, only: :create
           post :unfavourite, to: 'favourites#destroy'
 
+          resource :bookmark, only: :create
+          post :unbookmark, to: 'bookmarks#destroy'
+          
           resource :mute, only: :create
           post :unmute, to: 'mutes#destroy'
 
@@ -360,6 +363,7 @@ Rails.application.routes.draw do
       resources :filters,      only: [:index, :create, :show, :update, :destroy]
       resources :endorsements, only: [:index]
       resources :shortcuts,    only: [:index, :create, :show, :destroy]
+      resources :bookmarks,    only: [:index]
 
       namespace :apps do
         get :verify_credentials, to: 'credentials#show'