Update scratch-vm to the latest version 

Don't crash the editor when a project file fails to upload.

Update scratch-paint to the latest version 

Issue/2530 block size locale

chore(package): update scratch-blocks to version 0.1.0-prerelease.153…

Add ev3 connection message and help links

Remove cruft and add comments to explain how setLocale is called.

Closes #2666

Updates to Tutorials Library

Enable the language menu

•All of the thumbnail images have been updated
•All of the videos have been updated
•New steps were added to Make a Game

use VM that includes `getLocale()`

chore(package): update scratch-blocks to version 0.1.0-prerelease.153…

Don’t let Google try to auto translate the GUI

HT @paulkaplan

Change 'video motion' to 'video sensing' and minor clean-up to extension library

Add a meta tag to make sure google doesn’t try to autotranslate:
https://support.google.com/webmasters/answer/79812?hl=en

In `blocks.jsx` only call setLocale if visible. Depends on `getLocale` being added to VM to know when global locale changed while not visible making the VM out of sync.

Closes #2646

Update scratch-paint to the latest version 

EV3/Microbit critical fixes for code freeze

Localize custom procedure modal title - per discussion, the changes to error-step are intended to avoid `i18n:src` errors

* Added localization for ‘Make a Block’
* ‘block name’ default text is in scratch-blocks

The changes in `error-step.jsx` were needed because the same id was defined in there and `unavailable_step.jsx`. The scripts to generate the json file for Transifex give an error if the same id is defined in two places. In error step it simply uses the id without redefining default value etc. The alternative would be to add a new messages.jsx file that has the definitions for shared text and include that in both places that use them.

Widen add-extension button to match category.