Add disk quota to groups

Disk quotas can now be set for groups. When a user logs in, their quota will be set to the maximum of their own, and their groups' quotas.

circle/dashboard/models.py

@@ -293,6 +293,10 @@ class GroupProfile(AclBase):
         unique=True, blank=True, null=True, max_length=64,
         help_text=_('Unique identifier of the group at the organization.'))
     description = TextField(blank=True)
+    disk_quota = FileSizeField(
+        verbose_name=_('disk quota'),
+        default=2048 * 1024 * 1024,
+        help_text=_('Disk quota in mebibytes.'))
 
     class Meta:
         ordering = ('id',)
@@ -332,10 +336,10 @@ def create_profile(user):
 
     try:
         store = Store(user)
-        if store.user_exist():
-            profile.disk_quota = store.get_quota()['soft']
-            profile.save()
-        store.create_user(profile.smb_password, None, profile.disk_quota)
+        quotas = [profile.disk_quota]
+        quotas += [group.profile.disk_quota for group in user.groups.all()]
+        max_quota = max(quotas)
+        store.create_user(profile.smb_password, None, max_quota)
     except:
         logger.exception("Can't create user %s", unicode(user))
     return created