Add Sparkle updater.

Signed-off-by: Rob Caelers <rob.caelers@gmail.com>
Fix OSX compilation.

Signed-off-by: Rob Caelers <rob.caelers@gmail.com>
Remove obsolete configuration file.

Signed-off-by: Rob Caelers <rob.caelers@gmail.com>
Remove unused code.

Signed-off-by: Rob Caelers <rob.caelers@gmail.com>
Fix stacking order of break windows.

Signed-off-by: Rob Caelers <rob.caelers@gmail.com>