Update browser_helper.rb and warn for old Firefox and Safari
Use 'browser' gem for detection instead of custom regex
Update activity-monitor to use gem 'browser' instead of 'user_agent_parser'
Fix activity-monitor and lib/cdo extension
Add free play links to header
Tweak icon metrics
Checkpoint
Free play links for student dashboard
Code review feedback
consolidate steps
Add hand cursor again to video play button.
localize new hourofcode.com strings
Add unit tests for free play link helper
update default language for countries
hourofcode.com translations 09/30
RTL helper
constant shortform
typo
reformat i18n resources
Don't slog to activity-monitor for unplugged levels