Hiding moves the window vertically out of the clipping area,
so we're sure icons are not visible.
Sorting now takes place when repainting, after checking the
tray icons sorting does not respect the config files.
The file generated when handling SIGUSR1 has a hint
on how to sort hidden icons.
Fixed the generation of the sorting file, now it
keeps the ordering of hidden icons too.
Added # line comments support to configuration files
It was caused by a wrong check in the resize event handling:
We were still checking if the window wanted to resize to something
different than iconsize x iconsize, while now we just want to check
for heights different than iconsize.