Improve assets loading: remove http call to load task colors and async load of app.js

app/Controller/App.php

@@ -93,16 +93,6 @@ class App extends Base
         $this->response->html($this->helper->text->markdown($payload['text']));
     }
 
-    /**
-     * Colors stylesheet
-     *
-     * @access public
-     */
-    public function colors()
-    {
-        $this->response->css($this->color->getCss());
-    }
-
     /**
      * Task autocompletion (Ajax)
      *