fix(datepicker): alternate input formats: setViewValue on parse

Author: davious

Diff for: src/datepicker/datepicker.js

@@ -817,6 +817,7 @@ function(scope, element, attrs, $compile, $parse, $document, $rootScope, $positi
         for (var i = 0; i < altInputFormats.length; i++) {
           date = dateParser.parse(viewValue, altInputFormats[i], scope.date);
           if (!isNaN(date)) {
+            ngModel.$setViewValue(date);
             break;
           }
         }