Copy of 1.0.4 tree.  Base for Telemetry Experiment.
updated telex readme, package.json
icon, GA advice
New UI triggers.  Question bars, widgets WIP.  New Arms.  After page redirect queryargs works reasonably
upload validation code
Refactor to support Heartbeat Input API.
- flow state stored locally (flow.js)
- data validation
- phonehome knows packet formats
added flow.js
basic overview doc
revised formatting
Example invocation
tenative WIP.

includes
- stub pages for engagement work
- bars with all (achievable) styling
- getnb-helper.js to get existing bars from debug page
- npm package.json for pages
- new icons from UI bug
better readme
minor template fix for dummy js, more globals
randint to utils
Implementation of 'sample-spreading' to allow psuedo-recurrent Telemetry Experiment