Minimized and maximized errata

Minimized were being resized.
Maximized were being faux-dragged, which was causing an error on
restore.
A bit smoother transition for un/minimizing

It is still a bit buggy when is being reduced in size: size -> min-size
-> size
Abstract Container
Fix no transition for un/maximizing vertical panes
Remove unused functions
Fix bug after maximizing collapsed vertical panes

The panes wouldn't fill the screen, but stay in the same place/size