Remove getLookAndFeel method from SwingController.

Remove deprecated getMainFRame method in SwingController.

Remove getVersion, about dialog can query directly.

DI the windows media source plugin.

Fix QAuth plugin.

Initial work on QAuth plugin.

Start making the NotificationManager more sane.

Use PackingTable for the errors dialog.

Add an interface for handlers, rework the manager to always use
the interface instead of doing dodgy exported stuff.

Use an explicit comparator to sort plugins.

PluginInfo randomly implements Comparable and compares itself
by name, which I want to kill.

Fix a couple of plugin ctors.

Issue 281

Add skeleton Q Auth plugin.

Fix plugin ID for channel who plugin.

Use events for showconfig for all remaining plugins.

Use plain jgit for versioning.

Fix OSD Plugin.

Use events for showing config in some more plugins.

Switch more plugins to use events for showconfig.

Fix annoying WindowProvider logic in DCCManager.