[crossfire] Speech bubbles for NPCs

[Kevin Zheng]

Hi there,

This attached patch, along with the attached archetypes, adds speech 
bubbles to monsters and NPCs.

Speech bubbles increase discoverability for interesting dialog. In 
Crossfire, there are many NPCs and monsters who have no dialog, and so 
trying to chat up every single NPC is a bit tedious.

I think a change like this makes the game more fun to play.

Regards,
Kevin
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