added start and stop entries

enhanced administration of activities/projects/customers
added navbar for active records and recent activities
added edit timesheet entry form
added translation packages for errors and flashmessages
upgraded composer packages

web/app_dev.php

@@ -32,7 +32,6 @@ $loader = require __DIR__.'/../app/autoload.php';
 Debug::enable();
 
 $kernel = new AppKernel('dev', true);
-$kernel->loadClassCache();
 $request = Request::createFromGlobals();
 $response = $kernel->handle($request);
 $response->send();