Add Show/Hide window item to right-click tray menu

[arshesney]

As per title, using libappindicator with KDE the main window isn't restored by left-clicking or double-clicking the tray icon, it is only possible to open the right-click menu.

I hacked a menu item that uses the function on_statusicon_clicked, the patch is attached to this post.
Dunno how to make a pull request, but can make one if preferred.

restore-window.txt

[kozec]

Thing is, this would add same item to menu in main window, where it makes zero sense.

Oh yeah, indicator has no click event. I forgot. !$#@#$ this -_-

[arshesney]

Yeah, I just thrown a quick workaround, probably the best place for this item would be the osd menu.