greeter:new UserInfo(uid) instead of username; move guest_id guest_name to accounts.coffee for global var and test ok; and is_need_pwd test ok
greeter-theme:add js
lock:fixed bug of uid
greeter-theme:sky has animation
greeter lock:delete lock.element; but cannt listener document.body .click or keydown event: because the event is listened by theme-iframe
greeter:add z-index = 10 in greeter.css and change z-index in user.css
res:dock:: fix region problem.

the dock region is wrong after undocking some apps.

reason:
not set dock to unhovered.
guide:fixed laucher srcoll direction
greeter&& lock:add inject_css to instead of link in html and prepare use the lock.html in greeter-theme/sky/lock.html
greeter lock html:css all move to coffee
guide:desktopzone page time total 3000