bring back mail list and cleanup some issues which popped out with full PHP warnings

include/contact_widgets.php

@@ -70,11 +70,11 @@ function fileas_widget($baseurl,$selected = '') {
 
 function categories_widget($baseurl,$selected = '') {
 
+	$a = get_app();
+	
 	if(! feature_enabled($a->profile['profile_uid'],'categories'))
 		return '';
 
-	$a = get_app();
-
 	$terms = array();
 	$r = q("select distinct(term) from term where uid = %d and type = %d order by term asc",
 		intval($a->profile['profile_uid']),