FortunePlugin: made it more IT-oriented.
Merge pull request #32 from rexim/fortune-changes

FortunePlugin: made it more IT-oriented.
Remove bad fortune themes. Enlarge the fortune limit. Print fortune source in the output.
Add auto reconnect.
Remove redundant logging.
Implement proper auto-reconnection.
Add topic incrementer mode. (Yeah, it architecturally sucks and will be replaced some day.)
Block from answering to other bots.