Fix stage naming by using intl.formatMessage instead of component.

Fixes #1955

Fix sentry config, used too many quotes

Move analytics things to environment vars

chore(package): update scratch-paint to version 0.2.0-prerelease.2018…

Closes #1949

Move ErrorBoundary back into the app, fix IE error boundary

Update scratch-render to the latest version 

Make remaining text translatable, and prevent future regressions

Bitmap import and export

Add sprites, costumes, and backdrops from Ipzy

Revert localization of crash message.

We realized that the VM actually uses actual rotation center, so I moved the point where division by 2 happens into the VM

Change how information is sent to the vm to match the usual definitions the VM uses for that information

Fix errors when dragging in player mode

It doesn't work without an intl provider, which is mounted inside the error boundary.

Update libraries with new version of libgen

Update scratch-blocks to the latest version 

Upload a costume from camera