Fixing up continue in report page.
Merge pull request #325 from nanan9177/blockly_fix

Fixing up continue in report page.
Allow a dialog box which doesn't automatically close upon clicking the backdrop.
Merge pull request #326 from code-dot-org/builder

Allow a dialog box which doesn't automatically close upon clicking the b...
[Finishes 67232316, 67229902]: Text fixes, add puzzle 9
Update README.md

Add rbenv rehash
Hide unplugged activities from followers dashboard (#62021606)
Update README.md
Include umbrella repo note in README.md
Make 'all' checkbox alone not show section assigner. Margin tweak on Go button. New toggled text prompt for assigning students.
Duplicate section assignment dropdown
Use games.app instead of games.name query
Merge pull request #327 from code-dot-org/followers-hide-unplugged

Hide unplugged activities from followers dashboard, add gem quiet_assets in development (#62021606)
Adding the Spanish unplugged lessons.
Merge pull request #329 from nanan9177/blockly_fix

Adding the Spanish unplugged lessons.
Revert 'hide unplugged levels in dashboard', [closes #62021606]
Merge pull request #330 from code-dot-org/followers-reshow-unplugged

Revert 'hide unplugged levels in dashboard', [closes #62021606]
Fix bug in option tag
Translations
add assets to robots so that our twitter image can be crawled