FIXED: JOIN/PART channel messages.

Some issues still reside but i think can give this a Go for the release.

Known issues:

*	If user has got +v while got +o and gets deopped,
 	it doesnt remember the previous mode and sets zero prefix

*	Names list is not channel specific yet :(

*	The bot cannot "see" itself, so bot given modes arent included to prefix
	Not too sure about this one, sometimes it seems to be working just fine...

*	If someone parts the channel, it cannot get the nick prefix straight...
	We are using there self.get_nick() to have just any nick in place

( ISSUE #39 )