client only chat is 80% operational :)

librocket is working quite well...hitting the send button clears the line
and adds it to the dequeue of lines of chat history, which then triggers
reloading of the librocket content. awesome
assert on text buffer overflow (capped at 256 chars the chat input

line is for now). assert will verify to me that my networking (TODO) won't
break everything.

also put a stop to HTML injection by sanitizing the < and > chars
enter works to submit chat now
chat window scrolls to the bottom on new arrivals