Update copyright information
Provide ability to remove sidebar

[#40794219]
Updating the interactive model scrolling.

Intended to fix [#40799485]
Updates rails to 3.2.11 to patch vulnerability

refs https://groups.google.com/forum/?fromgroups=#!topic/rubyonrails-security/61bkgvnSGTQ
Updated CC logo
Capistrano multistage
Favicon for new CC logo
Fixing deploy domain for staging
Whitespace and comment cleanup
Adding multi_json gem
Adds 'prompt' to multiple-choice choices
Adds "check" action for choices
Ignoring some cache files
Check-answer works from console.

This script takes a question ID and pops up an alert box indicating if it's correct or not. [#39917671] Iterate...
Re-enable functioning check-answer button

[#39917671] Removes CSS which hid the button, and makes it call our checkAnswer() function with a proper argument.
Custom prompts can be provided for multiple-choice

…and those are shown in the check-answer alert boxes. [#39917671]
Note for future refactoring...
Puts check-answer results in modal window

This gets rid of the alert boxes and finishes [#39917671].
Smarter refactoring for prompt response

[#39917671]
Ah, there's what I missed. [#39917671]