hiding development block from ACP if not in dev mode

src/routes/admin.js

@@ -45,6 +45,7 @@ var nconf = require('nconf'),
 					username: userData.username,
 					userslug: userData.userslug,
 					'cache-buster': meta.config['cache-buster'] ? 'v=' + meta.config['cache-buster'] : '',
+					env: process.env.NODE_ENV
 				}));
 			});
 		});