Identify all the views (except EntriesView) with a '.which' attribute.

Will do EntriesView separate, after I stash other changes so I can
commit just that change.
Identify EntriesView) with a '.which' attribute.
Now using icons for folder actions back and edit (and, as before, add).

Problems:
- The icon positioning scheme wasn't designed for having the add and
  edit buttons showing at the same time. That needs to be redesigned,
  which I'll leave to devgeeks. In the meanwhile, for expedience I'm
  using relative position, for right-btn, which makes all the
  icons (except delete) on the left.
- Haven't yet implemented folder delete, leaving that for next.