Refactor admin/call_for_booth controller

app/controllers/admin/booths_controller.rb

@@ -0,0 +1,21 @@
+module Admin
+  class Admin::BoothsController < Admin::BaseController
+    load_and_authorize_resource :conference, find_by: :short_title
+    load_and_authorize_resource :booth, through: :conference
+
+    def index
+      @booths = @conference.booths
+    end
+
+    def show; end
+
+    def new; end
+
+    def create; end
+
+    def update; end
+
+    def destroy; end
+
+  end
+end