Status bar, more button cleanup

* New status bars for getting and sharing access, required a bunch of css changes to the roster
* Updated button styling (ask for access, start, offer access, grant, ignore, accept, and decline buttons are green, the rest are grey)
* New hamburger bar icon

Tested in UI and added new cases to ui.spec.ts
This is going to be non-trivial to localize. Can it be 'Sharing access with:' and then just a comma separated list of people.  Then there's a single string to translate, and we don't have to worry about the different puralities of different languages.