* Update subscription for preview PRs
* Fix command line args
* Replace subid for sub name
* Remove --subscription from az storage commands
* revert other changes
* Dynamic link to HEAD of a given PR
* Display pr name and link in notification console
* Pass along query string to Explorer
This means you can write a URL like:
https://cosmos-explorer-preview.azurewebsites.net/pull/123?feature.enableFoo=true
and when Explorer loads it'll have enableFoo set to true in the features
object.
