update the scratch-vm we use in package.json

Update scratch-l10n to the latest version 

Hidden tutorial library items for LEGO WeDo 2.0 and EV3

Change "See Community" to "See Project Page"

[Develop] sound library update

Updated Scratch Cat!

handle the onRemixing prop from www

Bind vm project_start event to passed in onGreenFlag prop

if in LoadingState.SHOWING_WITHOUT_ID, don't transition to default project

Adding relevant EV3/WeDo2 tutorial vid links, fixing up some json, removing some prop validation, etc.

"Save Now" menubar option when project has changed

Do not show cloud variable option in list modal.

Fix error logging when workspace fails to update 

Feature/3942 embed project

Liked @paulkaplan’s suggestion that the property get renamed `showBranding` as we use ‘embedded’ in multiple ways that would get confusing.

The embedded project view is ‘playerOnly’, ‘fullscreen’ and ‘showBranding’.

Remove default state for extensions that haven't been added to a new project yet

Update chromedriver to the latest version 

Update scratch-vm to the latest version 

Update scratch-blocks to the latest version