Update index
Check params
Add debugging-related gems in development
Update parameter handling and add better_errors
Update dashboard view
Require better_errors in development only
Setup development and test Gemfile groups
Update Guardfile for rspec
Memoize helper methods and add a not_found action
Add a base external request spec
Remove unused spec
Add base feature specs
Create a fake github service
Add json fixtures for github service
Mock github requests
Update user thumbnail css
Rearrange user details in navbar
Add a view for 404s