Currently: the buttons are always on top of the page regardless of the phone's orientation (horizontal / vertical).
Instead we want:
horizontal => vertical toolbar buttons on the right (or left; we need to decide what is more ergonomic)
vertical => what we currently have: horizontal tool bar at the top of the page.
Can we do this in BSS using CSS Media Queries some how?
Reason:
When the user holds their phone screen horizontal, there isn't much vertical space left to draw diagrams in.
