Revert "Removed useless hook for contribution (managed via save)."

This reverts commit 4bad309.

GeolocationPlugin.php

@@ -23,6 +23,7 @@ class GeolocationPlugin extends Omeka_Plugin_AbstractPlugin
         'admin_head',
         'initialize',
         'contribution_type_form',
+        'contribution_save_form'
     );
 
     protected $_filters = array(
@@ -192,13 +193,12 @@ public function hookAfterSaveItem($args)
             return;
         }
 
+        $item = $args['record'];
         // If we don't have the geolocation form on the page, don't do anything!
         if (!isset($post['geolocation'])) {
             return;
         }
 
-        $item = $args['record'];
-
         // Find the location object for the item
         $location = $this->_db->getTable('Location')->findLocationByItem($item, true);
 
@@ -483,6 +483,11 @@ public function hookContributionTypeForm($args)
         }
     }
 
+    public function hookContributionSaveForm($args)
+    {
+        $this->hookAfterSaveItem($args);
+    }
+
     public function filterExhibitLayouts($layouts)
     {
         $layouts['geolocation-map'] = array(