feat(input): added drop event support

Author: XFree

src/ng/directive/input.js

@@ -1308,7 +1308,7 @@ function baseInputType(scope, element, attr, ctrl, $sniffer, $browser) {
 
     // if user modifies input value using context menu in IE, we need "paste" and "cut" events to catch it
     if ($sniffer.hasEvent('paste')) {
-      element.on('paste cut', deferListener);
+      element.on('paste cut drop', deferListener);
     }
   }