* move to Ubuntu 18
* created two ML recipes
* using update-sessionenvironmnet instead of refreshenv
* discover helper script URI rather than hardcode it
* fixing readme links to support reboot
This PR gets Master up to date with the common scripts approach. These are not done but this seems far enough along to proceed. We'll now move forward with refining these common scripts along with the dev scenario scripts that reference them.
Update dev_app.ps1 to
- UWP Workload
- Azure workload
- Windows Template Studio
- disabling hyper-v and WSL for now since choco would throw errors (will investigate)
