Add tabnav, dedicated auths view to RS service page

Includes a nicer view and illustration for when no auths exist yet

app/controllers/services/remotestorage_controller.rb

@@ -8,8 +8,7 @@ class Services::RemotestorageController < Services::BaseController
     # unless current_user.service_enabled?(:remotestorage)
     #   redirect_to service_remotestorage_info_path
     # end
-    @rs_auths = current_user.remote_storage_authorizations
-    # TODO sort by app name
+    # @rs_apps_connected = current_user.remote_storage_authorizations.any?
   end
 
   private

app/controllers/services/rs_auths_controller.rb

@@ -3,7 +3,12 @@ class Services::RsAuthsController < Services::BaseController
   before_action :require_feature_enabled
   before_action :require_service_available
   # before_action :require_service_enabled
-  before_action :find_rs_auth
+  before_action :find_rs_auth, only: [:destroy, :launch_app]
+
+  def index
+    @rs_auths = current_user.remote_storage_authorizations
+    # TODO sort by app name?
+  end
 
   def destroy
     @auth.destroy!