Check if an NPM release just happened. And if so, tag the commit and push to GitHub.

Thanks to @paulkaplan for pairing on this

Merge pull request #4512 from LLK/revert-4501-greenkeeper/scratch-render-0.1.0-prerelease.20190206213754

Revert "Update scratch-render to the latest version "

chore(package): update scratch-vm to version 0.2.0-prerelease.2019020…

Closes #4506

Use blob download instead of data-uri to enable large downloads

This was already being used for sb3s and sprite3s, but the code was repeated in different places. Make a single helper that downloads blobs, and make all download paths use it.

chore(package): update scratch-vm to version 0.2.0-prerelease.2019020…

Closes #4503

Update scratch-render to the latest version 

Update scratch-blocks to the latest version 

Update scratch-l10n to the latest version 

Update scratch-blocks to the latest version 

chore(package): update scratch-vm to version 0.2.0-prerelease.2019020…

Closes #4480

Wait until loader becomes stale to continue in project loader tests

Escape special characters in toolbox xml

Fix "See Inside" not showing variables

Fix issue #4431 by change 'dserver' to 'server'

I needed to update the player css because the editor side wasn't large enough to be useable.

We can't rely on refreshWorkspace always causing a toolbox update, so make sure to update the toolbox manually if it is needed.

Call updateToolbox after adding new blocks from the backpack.

Make uploaded sprites not draggable

Move blocks z-index up to match gui

Retain showBranding mode property after SET_FULL_SCREEN action is dispatched

Override the z-index for the blocks drag layer. At 1000, it will be over everything in the gui other than the navbar itself (monitors on the stage, tutorials, alerts, dropdown menus, etc.)

[develop] Hotfix/fix tests