Trimming messages prior to say code processing.

Hoping to fix any whitespace issues that stop processing of emotes and radio/language channels
Canceling an IRC-adminPM will not send a blank message.

Ooops
Merge pull request #4896 from Ccomp5950/robutt-say-fix-hopefully-oh-dear-god

Trimming messages prior to say code processing.
Merge pull request #4895 from Ccomp5950/irc-pm-fix

Canceling an IRC-adminPM will not send a blank message.