one: disable quota editing only if the user _really_ has no more share quota

Well, the users share quota usage should never exceed the limit, so if
this condition is true, that indicates some other problems.

one/views.py

@@ -208,7 +208,7 @@ ajax_share_wizard = login_required(AjaxShareWizard.as_view())
 class AjaxShareEditWizard(View):
     def get(self, request, id, *args, **kwargs):
         det = UserCloudDetails.objects.get(user=request.user)
-        if det.get_weighted_share_count() >= det.share_quota:
+        if det.get_weighted_share_count() > det.share_quota:
             return HttpResponse(unicode(_('You do not have any free share quota.')))
         types = TYPES_L
         for i, t in enumerate(types):