Rated 5 out of 5 stars

First, many thanks for this great add-on.

It has recently (ver. 1.2.1) stopped working in TB 31.5.0 on Ubuntu 14.04 LTS:
- doesn't prevent deletion actually
- can't be configured: the configuration dialog doesn't offer OK/Cancel buttons - just 'Close' - but that drops any changes made
- it doesn't even issue a confirmation dialog upon deletion attempt

best regards
Janusz