Merge pull request #2 from feldsam/master

Added import, acl refexes, teams has teams, Removed some new lines
Merge pull request #3 from feldsam/master

Hi, I added some new methods and optimalizations
Merge pull request #4 from feldsam/master

User deleting and renaming fix
fixed double $ error
Merge pull request #5 from ns3777k/master

fixed double $ error
Acl::render() fixed checking for users

Signed-off-by: Kristián Feldsam <feldsam@gmail.com>