Update scratch-l10n to the latest version 

chore(package): update scratch-vm to version 0.2.0-prerelease.2019011…

Closes #4316

Allow putting mp3 sounds in the backpack.

Update scratch-svg-renderer to the latest version 

Show loading screen in fullscreen mode

Make whole stage clickable for green flag overlay

Discovered this while trying to pass other props to the stage wrapper, we were not passing isRTL to the stage wrapper, causing ask/answer bubble to not display the right direction.

resolve name conflict by renaming onProjectLoaded in project-fetcher-hoc

https://github.com/LLK/scratch-gui/pull/4312 had a function name conflict with the existing code. This change fixes that by renaming the conflicting function, and removes redundant code.

Move the onClick handler to the overlay wrapper so that the whole stage is clickable to start the project instead of just the green flag button

Update scratch-render to the latest version 

add support for onProjectLoaded

check for non-null flyout

www needs to know when a project finishes loading so that remixing can be disabled while the project is in a state that cannot be remixed.

Update scratch-svg-renderer to the latest version 

Update scratch-vm to the latest version 

Update scratch-render to the latest version 

chore(package): update scratch-vm to version 0.2.0-prerelease.2019010…

Update scratch-render to the latest version 

Revise how unsupported browsers are handled

Browsers other than IE will be allowed to load the GUI.
However, if there is an error, the error boundary will display an unsupported browser message recommending they update to the latest version of a supported browser.

For the purposes of this PR, ‘supported’ means you can load the gui (anything other than IE), and recommended is just the browsers that meet our minimum requirements for Chrome, Firefox, Edge and Safari.

Closes #4294

Revert "Check for minimum versions of recommended browsers"

Merge pull request #4295 from LLK/revert-4289-greenkeeper/scratch-render-0.1.0-prerelease.20190108175224

Revert "Update scratch-render to the latest version "

Check for minimum versions of recommended browsers

Update scratch-audio to the latest version