Fix preference page with customer ImageSize plugin

As noted in the code, this was getting loaded in a rather special way.

airtime_mvc/application/forms/GeneralPreferences.php

@@ -1,5 +1,9 @@
 <?php
 
+// this is not getting loaded by autloading since it has a classname
+// that makes it clash with how zf1 expects to load plugins.
+require_once 'customfilters/ImageSize.php';
+
 class Application_Form_GeneralPreferences extends Zend_Form_SubForm
 {
 

airtime_mvc/application/forms/customfilters/ImageSize.php

@@ -1,4 +1,14 @@
 <?php
+/**
+ * custom filter for image uploads
+ *
+ * WARNING: you need to include this file directly when using it, it clashes with the 
+ * way zf1 Zend_Loader_PluginLoader expects it to be found. Another way around this
+ * might be to rename the class and have the new name get loaded proper.
+ *
+ * Since this is only getting used on the GeneralPreferences form I am re-adding the
+ * require_once over there to get this fixed for now.
+ */
 
 class Zend_Filter_ImageSize implements Zend_Filter_Interface
 {