Place tabs in same place as menu button about go-for-it HOT 2 CLOSED

One thing you should know is that I'm planning to add one extra element to the headerbar: a button to switch to a selection screen for lists. (As I'm planning to add the option to have more than one list, eventually also multiple back ends.)

If the StackSwitcher would be moved to the headerbar with the text replaced with icons or if it would replaced with 3 icon buttons the headerbar would get a bit crowded. Perhaps the extra vertical space can justify this, though.
It may be worth experimenting with this.

First I want to merge https://github.com/mank319/Go-For-It/tree/listbox-dnd, but I want to be reasonably certain that it doesn't introduce any bugs.

from go-for-it.

When using Go For it! compiled from git master you will get something like this:

Some options to change the icon size (shrinking the headerbar slightly) or to use text instead will also be included in the next version.

from go-for-it.