Simplfiy css and disable static caching
Add save and save+close buttons
Clean up tab select/close

Note this is still very buggy, starting to wonder if this is in
bootstrap itself, as I think the exact right dom elements are being
deleted here.
Side step bootstrap tab issues

The issue of bootstrap tabs going "white" where selecting any tab
shows nothing on the page (aka no tab content is shown) is non
deterministic and actually quite hard to troubleshoot.  I tried a
bootstrap upgrade (which I'll do anyway) and am simplifying things by
putting a close button on the active tab.  This means you can't close
a tab not currently visible, which simplifies things quite a bit.