0.7.7 Compatibility and Weapon Fixes

Tested with on 0.7.7 (in several real sessions) and confirmed the new features work in 0.6.6, so this should be ready for release. It closes a big chunk of the issues tracker (everything tagged pending-fix at time of submission).

Importer improvements to handle empty weapon slots on PCs, damage modifiers on NPCs, and to hide the Purple Sorcerer link for NPC imports.
Make it an option to use the default chat cards to allow Dice So Nice etc to work.
Allow damage/healing to be applied from any dice roll card.
Show the dice rolled and result for crit/fumble rolls.
Add title field to upper level sheets.
Improve the mechanism for enabling class features outside of their usual classes:

Streamline warriors/dwarves by enabling the deed roll automatically for those classes.
Allow backstabs on any sheet (remains automatic for thieves).
Highlight disapproval for clerics
Add a Disapproval Table dropdown to the cleric sheet and buttons/macros to roll disapproval or increase the disapproval range.
Default to prompting before deleting items (can be disabled as a setting, but that's mainly useful for testing/debugging).