DEV-50204 "Ericag Vader" shows when starting IM and local chat
DEV-50204 "Ericag Vader" shows when starting IM and local chat

Start with blank header to hide sample text from XUI XML.  Also fixed
problem with computation of minimum chat header name width when the
name wasn't in cache.

gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm,gabeharms/firestorm