add some touch support

- fire touch(start|move|end) events after adding clinetX/Y
- use touch events in video and timeline widgets
- use touchstart to select item in ArrayEditable

source/UI/js/Video/BlockVideoTimeline.js

@@ -55,7 +55,9 @@ Ox.BlockVideoTimeline = function(options, self) {
             doubleclick: doubleclick,
             drag: function(data) {
                 mousedown(data);
-            }
+            },
+            touchmove: mousedown,
+            touchstart: mousedown
         });
 
     self.$images = [];