Glade misleads us into thinking we need these, but the
property is somewhat confusing in GTK3. In general we don't
want `can-focus` to be true for containers, as that will
break keynav for the children. For non-containers, the
defaults are appropriate.
Instead of manually setting `can-focus`, we should just
use the default values. GTK has sane defaults.
Fixes https://gitlab.gnome.org/GNOME/calls/-/issues/366
* Make the Answer button look nice and laid out properly.
* Merge the time and status labels, displaying simply the text
"Calling..." until the call becomes active and then the call time
afterwards.
* Fix info display bar in both the call and main windows so they use a
GtkRevealer and work a lot better.
* Add a "new-call-symbolic" icon for the "Add call" button.
* General tweaks and clean-ups
Closes#55Closes#35
