htmltidy 6.x-1.3

I was compelled by the new git infrastructure to fix a couple of these outstanding issues and make a new release. Thanks for your patience in the past and let me know if there is anything i can do to improve the module for you.

Fixes form_set_value() error and test for missing warning files if no warning it found. No other appreciable changes. might restructure to use the reports, and settings page if anyone would like.