Lets fix that toolbar shall we - and make it great on mobile!

It’s time to clean up - one thing I’ve wanted was that the drawing toolbar can collapse on a phone (hamburger only), and snap to an edge so rotate doesn’t lose it, and nudge back on-screen if expanding would clip. Quality of life type stuff here.

Well, that's done - detailed post (https://expressed.effective-flow.com/blog/building-in-the-open-mobile-toolbar/) - now the toolbar... sucks FAR FAR less.