* Implement GH-830: Add coming soon tooltips

This implements coming soon tooltips for:
* the small stage size
* save, load and language

It also creates the component that can be copied over into the paint editor for use there as well.

Lastly, this does a small refactor on the full screen implementation to include multiple small screen sizes too.

Update to most recent paint editor release

Merge pull request #1085 from LLK/greenkeeper/scratch-vm-0.1.0-prerelease.1513789849-prerelease.1513789862

Update scratch-vm to the latest version 

Update react-modal to the latest version 

Merge pull request #1078 from LLK/greenkeeper/scratch-vm-0.1.0-prerelease.1513719220-prerelease.1513719234

chore(package): update scratch-vm to version 0.1.0-prerelease.1513719…

Disable the 'collapse' option in the blocks workspace

chore(package): update scratch-blocks to version 0.1.0-prerelease.151…

Closes #1073

Closes #1076

Update paint dependency to get hotfix for eyedropper

Fix touch actions on the stage

Lock scratch-* dependencies to their current versions

Update chromedriver to the latest version 

Update file-loader to the latest version 

Fix backdrop library 

Show newly added assets after they are loaded

Add musical instruments and letters to libraries

Localizes the pen extension:
- loads all pen locale information - may want to consider dynamically loading locales later.

Update xhr to the latest version 

Renamed meow sound to Meow

chore(package): update copy-webpack-plugin to version 4.3.0

Add full screen render view

  1. Removed duplication of code in stage component to avoid future
     potential divergence. Now just selectively applying styling based
     on states of zoomed, colorPicking, and question.

  2. Fixed bottom border getting chopped in zoomed mode by adding margin
     and adjusting height/width accordingly.

  3. Removed shouldComponentUpdate from stageHeader as suggested from code
     review. Added ignore lint warning suggesting change to stateless function.