renamed 'use_shortcut' method to 'handles'

IPython/html/static/base/js/keyboard.js

@@ -237,7 +237,7 b' IPython.keyboard = (function (IPython) {'
         return true;
     }
 
-    ShortcutManager.prototype.use_shortcut = function (event) {
+    ShortcutManager.prototype.handles = function (event) {
         var shortcut = event_to_shortcut(event);
         var data = this._shortcuts[shortcut];
         return !( data === undefined )

IPython/html/static/notebook/js/cell.js

@@ -173,7 +173,7 b' var IPython = (function (IPython) {'
 
         // if this is an edit_shortcuts shortcut, the global keyboard/shortcut
         // manager will handle it
-        if (shortcuts.use_shortcut(event)) { return true; }
+        if (shortcuts.handles(event)) { return true; }
         
         return false;
     };