allegro/ralph — pull request #916 by xor-xor (2014-06-09 08:59:46+00:00)
Title: Fixes related to 'unknown' model_type and empty values in scan results form.

User should be forced to specify custom value for model_type when there's only 'unknown' value for this field in db or scan results.

Empty values should be displayed as 'None' instead of an empty string.

Fixed comparison of lists in diff_results.