Pinned all the npm dependency versions

This it was ByteBuffer.js getting updated to 3.x that broke it this time.
Pinned that back to 2.3.1 and pinned everything else in the dependencies
list while I was at it. Hopefully this will be the last time this bites
us.

Change-Id: I75e9e708203044de2694a27a977c7b0e59aac2ed