add "Settings" option in integration screen

[iTrooz]

#530 but in a different branch

[TheAssassin]

I just had a glance. Seems like a good idea. What I don't like is that we just close the dialog. I understand that we cannot just open the settings on top because we'd have to reload the current dialog's settings then (and also, the settings application is a standalone tool, but then again that could be fixed).

Let's target the upcoming release, but postpone merging to after "I can package this app as .deb and .rpm again". (That is making progress, by the way.)

[iTrooz]

Okay, I'll wait until that is done then

thanks for responding !