Update PHP files to pass coding standards

lib/assets.php

@@ -93,7 +93,7 @@ function google_analytics() {
       e=o.createElement(i);r=o.getElementsByTagName(i)[0];
       e.src='//www.google-analytics.com/analytics.js';
       r.parentNode.insertBefore(e,r)}(window,document,'script','ga'));
-    <?php else: ?>
+    <?php else : ?>
       function ga() {
         if (window.console) {
           console.log('Google Analytics: ' + [].slice.call(arguments));