Fixing Server Admin assignment

Changed _add_user_to_group() to take group ID instead of group name.
addgroups and remgroups are now lists instead of dictionaries because I
don't need the group names anymore.
Removed debug logging from _add_user_to_group() and send_command()

services/managers/util/ts3.py

@@ -60,8 +60,6 @@ class TS3Proto():
     def send_command(self, command, keys=None, opts=None):
         cmd = self.construct_command(command, keys=keys, opts=opts)
         self.send('%s\n' % cmd)
-        
-        print("Command to be sent: {0}").format(cmd)
 
         data = []