[bme-develop] Commited contacts picture code

[D. G. <A00...@it...>]

Hi, I finally commited the changes to get the contacts picture and 
display it when on a conversation. There are still some bugs, I noticed 
some crashes when chatting with MSN 7 (BETA) on Windows, getting some 
unexpected answers, I will continue to work on this.

If you feel the need to turn it off go to 
MsnSBHandler::handleIRO_JOI(const char* account) and comment the 
following line (652)
	userPictGetter->invite(account); 

You also will need to remove any previous cache files. There was a 
problem in the instantiation of contacts.

Regards,
Daniel