Making sure we always configure bokeh url prefix and ws_conn_string
basic tornado support completed
websockets working in browser now
Merge remote-tracking branch 'origin/master' into feature/tornado

Conflicts:
	bokeh/server/serverbb.py
	bokeh/server/views/backbone.py
merge error
new backbone update endpoint, which does not send back the model
multi server deployment working
Merge remote-tracking branch 'origin/master' into feature/tornado
websocket startup script
removed extraneous file
Added script to setup.py
removing embed_core from main.coffee
removed references to wsmanager in the bokeh app
remove unused code
fix tests and ioloo
changing timeouts, deleting unused functions
added logger
Install nodejs using conda and add bokeh channel
Don't install grunt-cli in build.sh

npm does that already.
Don't install Miniconda3

We have to install specific version of python anyway.