Added _description attribute for model Res.groups.

lp bug: https://launchpad.net/bugs/672552 fixed

bzr revid: sma@tinyerp.com-20101116125338-ryuhc33tg1lg1iuj

bin/addons/base/res/res_user.py

@@ -33,6 +33,7 @@ import time
 class groups(osv.osv):
     _name = "res.groups"
     _order = 'name'
+    _description = "Access Groups"
     _columns = {
         'name': fields.char('Group Name', size=64, required=True),
         'model_access': fields.one2many('ir.model.access', 'group_id', 'Access Controls'),