Removing old and unused code

First pass at removing code, mark up and assets associated with the
old, pre-Thorax based UI. Some of these assets may have been abandoned
long ago.
Getting rid of the old application layout

We had two application layouts: one for the old view and one for the
new, Thorax based view. This gets rid of the old view and moves the
new stuff into the usual Rails locations.
Getting rid of our archives that were being used by the old UI
Merge branch 'old_ui_cleanup_rebase'