Include angular-file-upload and add a fix for its dragleave issue

Signed-off-by: Julius Härtl <jus@bitgrid.net>

js/app/Config.js

@@ -82,4 +82,22 @@ app.config(function ($provide, $interpolateProvider, $httpProvider, $urlRouterPr
 			}
 		});
 
+	$provide.decorator('nvFileOverDirective', function ($delegate) {
+		var directive = $delegate[0],
+			link = directive.link;
+
+		directive.compile = function () {
+			return function (scope, element, attrs) {
+				var overClass = attrs.overClass || 'nv-file-over';
+				link.apply(this, arguments);
+				element.on('dragleave', function (event) {
+					element.removeClass(overClass);
+					event.stopPropagation();
+				});
+			};
+		};
+
+		return $delegate;
+	});
+
 });