make date picker able to select other days

Make us able to select date that not in the options.
Use input[type=date] in browser support html5 input type,
and use jQueryUI date picker in browser that doesn't support that.
preview : 
![cd6f435825](https://cloud.githubusercontent.com/assets/2993977/4518444/91de7de8-4c8d-11e4-8053-db276ce28ba5.png)