[Geany] Couple of questions from a new user

[Vineet Jain]

> Sorry, I don't understand how this relates to fullscreen. I think
> fullscreen should by default only expand the editor widget like you
> want, but the GtkVPane widget we use doesn't have an easy way to do this
> AFAICT.

Lets say I had a keybinding for each of the following:
1. show message window
2. Show toolbar
3. show side panel

Then i could have a third key binding Full Screen: which would call 1,
2, 3, above