issue #19051: deleted 440/443ths of the orm installer

This was a bit dramatic, I know. 

The only three files left are
installer.js -- for command line processing
orm.js -- does all the work
README

It's no longer set up as a webapp and it can be run programatically. Much but not all of the dependency on node-xt is gone. The pesky socket.io-client dependency is gone.