HT @paulkaplan

Fixes integration test which was failing trying to use the context menu

It's failing in CI for reasons we don't yet understand

Tests adding a list through the UI, the add <thing> blocks, the reported value and adding items using the monitor UI

This reverts commit 29d5619d.

* Updates to preview modal for release

* Design tweaks and remove import modal

* Resolve issues with tests

* Copy edits HT Eric

* Resolve lint issue with integration test

* One more change to the disclaimer language

* Add line break

Pages no longer reload if you hit the same hash URL twice

Resolves https://github.com/LLK/scratch-gui/issues/1713