Merge branch 'QA_4_5'

ChangeLog

@@ -49,6 +49,7 @@ phpMyAdmin - ChangeLog
 - issue #11874 Validate version information before further processing it
 - issue #11881 Full processlist lost on refresh
 - issue #11834 Adjust privileges fails if database name contains underscores
+- issue #11906 'Loading...' banner shows on login screen
 
 4.5.4.1 (2016-01-29)
 - issue #11892 Error with PMA 4.4.15.3

js/navigation.js

@@ -564,6 +564,11 @@ AJAX.registerOnload('navigation.js', function () {
         }
     }
 });
+AJAX.registerTeardown('navigation.js', function () {
+    if (isStorageSupported('sessionStorage')) {
+        $(document).off('submit', 'form.config-form');
+    }
+});
 
 /**
  * Expands a node in navigation tree.