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
Better RBENV instructions

things kind of working, with hackery

clean things up a little
more cleanup
Add free play links to header
Tweak icon metrics
Checkpoint
Free play links for student dashboard
[Fixes #79201066] Fix send to phone feature on /sh pages
Also filter phone number parameters from log
code review
Dropbox changes
Code review feedback
Merge branch 'staging' of github.com:code-dot-org/code-dot-org into staging

Conflicts:
	pegasus/sites.v3/hourofcode.com/public/resources.md
Updated Team page.
Adjust image order on hourofcode.com, and remove deprecated link to brstrap (aww).
Added share buttons to Thanks page.
Updated meta tags on front page.
consolidate steps