Add support for "simple confirm" of object deletion

i.e. can just use `window.confirm()` instead of showing full confirm page

note, this is jquery-only for now

tailbone/views/master.py

@@ -83,6 +83,7 @@ class MasterView(View):
     viewable = True
     editable = True
     deletable = True
+    delete_confirm = 'full'
     bulk_deletable = False
     set_deletable = False
     supports_set_enabled_toggle = False