Uncomment gitignore
Bumped json gem in response to vulnerability in 1.7.6:

https://groups.google.com/d/topic/rubyonrails-security/4_YvCpLzL58/discussion
Addressing 'Potential Query Manipulation with Common Rails Practises':

https://groups.google.com/d/topic/rubyonrails-security/ZOdH5GH5jCU/discussion
Removed unused actions from DeveloperData controller