Fixed GUI loading behaviour when DE's autologin is on.
Background:
Sometimes the system tray is not available, so our app's icon
does not show up. In this case we show the GUI to allow the user
manage the rules and view connections.
If the user activated the autologin option, on KDE (and probably others)
our service was launched before the panel was ready, so the system tray was
not available yet and we were showing the Events window.
Changes:
- Delay 10s the check to see if the system tray is available, to give it
time to load.
- Add X-KDE-Autostart-after=panel to kcm_opensnitch.desktop, to launch
the GUI only after the panel is loaded.
- Misc: removed OpenSnitch entry from System Settings on KDE, and update
the categories where the app is shown in the menus.
Closes#535
- display correctly the connection status with the daemon whe it's
disconnected.
- display correctly the icon (at least on gnome).
- changed "active" icon to svg, to fix a size problem displaying
notifications on gnome.
