Manually set the height of the entity container based on the dynamic height of the entities within it, because the nanoScroller needs a fixed (or at least percentage) height to size the scrollbar.
Merge branch 'alpha-redesign' of https://github.com/UnicycleLabs/clipper-foundation into alpha-redesign
Don't set width:100% on content that uses nano scroll bars.  Doing so results in the browser scroll bar still showing up in Firefox.
Merge.