upgrade bootstrap to v2.2.2
upgrade jquery to 1.9.0
- the main reason is some ajax bugs
add test for signup validation
add some patches from original validate.js
signup validation
- password length over 4 character
- retyped password confirmation
- add i18n messages
- error message definition
- apply bootstrap popover
Merge branch 'master' of https://github.com/nforge/nforge4

Conflicts:
	app/models/User.java