URL Plugin spam fix

This should stop the spam when the bot is given a url with an
exceedingly long title.
Changed the title limit from 450 -> 200 characters

Because of various things that can effect the amount of data you can
send as a message the number was lowered to 200. Things that could
effect this are channel length, hostmask, ident, nick, prefixes and
things of similar nature.
Merge pull request #30 from Shawn-Smith/master

Fixes multiple lines being sent when Cardinal receives very large title strings in URL plugin