Menu auto-update

[sfs-pra]

sfwbar-git-r1760.1d88978
After installing the package, it appears in the menu with the sfwbar icon. After killall -1 sfwbar the problem is solved, i.e. the correct icon appears

[LBCrion]

I'm working on a more flexible menu item implementation. It's taking some time, since menues are used in multiple places and unifying them all is a bit tricky.