playground: Remove web profile setup from Dockerfile.

Changed builder to use Node.js from PATH.
Dockerfile installs Node.js from repository instead of setting
up profile, which makes build considerably faster.
Replaced npm link with npm install and cleaned up Makefiles.

Change-Id: Ie01be66f4aeda371f6a102114c912829002ab175
9 files changed
tree: dff51cbef8e2cfbda44c1918e6e7b960c42886cc
  1. client/
  2. go/
  3. pgbundle/
  4. .gitignore