Lay groundwork for DCC (preferences)
Add basic DCC send support. Receiving support coming after.
DCC receive support.
Fix bugs
Fix members being deselected before dialog returned
Properly start timer
Better DCC handling
Fix support for reading quotes
Show address in file transfer window
Instead of checking ignore status two times, just pass the singleton
Do not set empty value
Add notifications for DCC file transfers.

Also fixes dock icon not bouncing for non-text notifications.
Non-working IPv6 support