Add length validation

Signed-off-by: Aniket Pant <me@aniketpant.com>
Modify style for validation classes

Signed-off-by: Aniket Pant <me@aniketpant.com>
Add latest version of jquery

Signed-off-by: Aniket Pant <me@aniketpant.com>
Add support for validation messages

Signed-off-by: Aniket Pant <me@aniketpant.com>