[Owncloud] New app to test : adminuser

[Vincent]

Hi all,

i made a app to allow user to manage other users and groups.
Add adminuser group to a user allow him to manage users.
He has no rights to the quota and can't add users in admin and adminuser 
group.
He can add, delete users and manage groups.

For testing with Owncloud 4.0.4 : 
https://gitorious.org/adminuser/adminuser/trees/8fd844dc8f70bafb84e6f45c229c3db92a810516
Your opinions are welcome.

Yoh