refactor(client): reorganize directory structure and Makefile

Follow conventions in the other client-side Vanadium apps for directory
structure etc.

* Static files live in `public` including build artifacts like bundle.{css,js}
* JS to be compiled via browserify lives in `browser`
* CSS to be compiled lives in `stylesheets`

Change-Id: I4a1fc3a93173ba867ef51716045baa641d94f258
Related: veyron/release-issues#802
14 files changed
tree: dfbd648cdd1b9680d47783e553919088098dc912
  1. client/
  2. go/
  3. pgbundle/
  4. .gitignore