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).

made alert messages translation-ready
updated project saver hoc
default alerts to COLOR_ORANGE

got tests working

made neutral button color