Replaced response.body for just body.
S-48655 Unified install.ps1 script for CS install

This takes a box from 0 to 100% running CommitStream.

Installs and configures EventStore, runs the node app, and imports history from the default repository (this one)
S-48655 reference access token in doc
Merge branch 'S-48655_SepJenkinsJobs' of https://github.com/openAgile/CommitStream.Web into S-48655_SepJenkinsJobs