Remove bower for now

Everything is committed to the project and we're not using it,
so removing it for now.  Should we remove the frontend libraries
from the git repo, and instead decide to use bower, we can bring
it back.  But for now it is woefully out of date and not
being used.
Remove "marketing" app.

This was the "home" application (although named in a rather
unusual way).  And it isn't be used.  Zap it from the repo.
Branch installation content to own doc

Installation instructions are now in INSTALL.md and
README.md points to INSTALL.md.