Update instant message stuff

Fixes auto response chats not showing the name, anymore; switches to using 25% more font color transparency to indicate autoresponse
Cleans up and reorganizes im codestuffs~
French login panel further update.
Edit Linked Parts counts and costs display update~

Show proper impact when editing multiple prims with edit linked parts enabled
Show "Selected prims:" instead of "Selected Objects: 0" when editing linked parts
Show two decimals of impact precision when editing linked parts.
Bug fixy ~ Reset Ambient Occlusion setting on cancel

Thanks to Cale Flanagan for finding this one.