use commas instead of (non-localized) 'human' strings for gallery counts
Merge pull request #524 from code-dot-org/gallery-commas

use commas instead of (non-localized) 'human' strings for gallery counts
Automatically built.
Automatically built.
Fix STI routing.
exit with nonzero code when we have failures
Merge pull request #529 from code-dot-org/runner

exit with nonzero code when we have failures
Use attribute in css select.
Merge pull request #525 from code-dot-org/fix-block-editor

Fix STI routing.
Add Karel type and refactor.
Update tests to work with new class hierarchy.
Fix up naming of sub classes (STI) and tests.
Ajax maze builder form so we can have unified response.
Update tests to fit with STI type names.
s/turtle/artist