Left Click on tray icon to show the app.

[alexandrucaraus]

Is your feature request related to a problem? Please describe.
Many apps when are closed to tray, and clicked on tray icon are displayed immediately.
Wasistlos shows a menu (show, about, quit).

Describe the solution you'd like
On left click on the tray icon to show the app.
On right click to show the menu as it is now.

I am using 1.7.0 version.