Localize default project

Questions:
* should the message strings include the number? Or should that get added to the name when the name is defined
* added a new ‘shared-messages’ to handle the definition of backdrop, costume, etc which are used in multiple places, they’re all related to defaults, so should it all be in `lib/default-project`

Restyle the question answer box for RTL

Update paint in smoke

Attempt to get monitor labels from VM

Closes #3122

Make title field shrink for smaller screens

Deploy to smoke branch

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

Update scratch-vm to the latest version 

chore(package): update postcss-simple-vars to version 5.0.1

Update react-style-proptype to the latest version