* Trim password and login before instertion
* Can use empty master key to see user passwords
* Fix a bug : can't decode multiple queries from client
Client side :
* Don't send empty username
* Update README
* Add $ADMIN_MODE to enable create users
* Add protocol version (1 for now)
* Give priority to letters in password generator
Client side :
* Don't still use global variable to get document after loading
* Add email type in possible values for username (used by gmail)