#2 Allow multiple "master accounts", enlarge buddylist

[Jan Oelschlägel]

In order not always changing bot setup allow multiple
controlling master accounts for each bot. The bot has
to detect which one is online.

Maybe split up into multiple bot connections (MyBot,
MyBot#1, MyBot#2, ...) to allow separation between
sender/receiver-bot and buddylist-bots. This would
remove the limit from the buddylist (dont know, if this
works...)