- Added function isEmptyString to fhc_helper

- Added function isEmptyArray to fhc_helper
- Adapted the code in application/* to use as much as possible this two new functions
- Removed the php function empty almost everywhere

application/libraries/WidgetLib.php

@@ -57,7 +57,7 @@ class WidgetLib
         loadResource($this->_widget_path.WidgetLib::DIR_HTML_WIDGETS);
 
 		// If config are given then initialize this lib with the given config
-        if (!empty($config)) $this->initialize($config);
+        if (!isEmptyArray($config)) $this->initialize($config);
     }
 
     /**