Added the java datetime library joda-time
Added Authentification classes to manage UserToken. Not yet tested.
ignore lib on the master branch
keep lib files to avoid damaging my branches
added method getPassoword to the user Object
Added method to get user by Email
Added Authentification possibility
Merge branch 'Branch-login-Security'

Added Authentification methods. Not yet tested but added to the master to allow People working doLogin and doRegister to continue to their work