Refactor cloud manager hoc to use component lifestyle methods to control cloud connection. Abstract our connection creation logic into a funciton. Make canUseCloud check a function.

Co-Authored-By: kchadha <kchadha@media.mit.edu>

Disable cloud variable option when vm reaches limit for project. Rename canUseCloud to match other property in the prompt container/component.

Move cloud connection logic into its own HOC and add canUseCloud flag to control whether to show the new cloud variable options in the variable modal.

* Update to VM hotfix version

This version is a custom build of VM, which has only this change applied to the currently deployed version https://github.com/LLK/scratch-vm/pull/1719

* Add HOC tracking px

Fixed some margins, added requires/collab library item section, and reminders to make extension/metadata-only.

Export the tutorial card URL query string handling for www.
Also fix typo

Adds `?tutorial=all` as a recognized option. Gui opens without the preview modal, and with the Tutorials Library open.

Back button in the Tutorials Library takes you to the Editor (not back to referrer).