Rails 4 removed assets group from Gemfile
Rails 4 removed assets group from Gemfile

- http://edgeguides.rubyonrails.org/upgrading_ruby_on_rails.html#upgrading-from-rails-3-2-to-rails-4-0
- Assets are not precompiled on demand in Rails 4 so we have to precompile in production

maclover7/codetriage,rvasqz86/codetriage,igas/codetriage,cheerfulstoic/codetriage,ven0226/codetriage,VishvajitP/codetriage,cheerfulstoic/codetriage,schneems/codetriage-ko1-test-app,avirajkhare00/codetriage,ven0226/codetriage,ven0226/codetriage,VishvajitP/codetriage,VishvajitP/codetriage,rvasqz86/codetriage,ngpestelos/codetriage,codetriage/codetriage,emilyforst/codetriage,emilyforst/codetriage,hone/codetriage,hone/codetriage,codetriage/codetriage,avirajkhare00/codetriage,CjayBillones/codetriage,hone/codetriage,cheerfulstoic/codetriage,ojengwa/codewarrior,CjayBillones/codetriage,ferdinandrosario/codetriage,ngpestelos/codetriage,avirajkhare00/codetriage,ojengwa/codewarrior,colinrubbert/codetriage,emilyforst/codetriage,CjayBillones/codetriage,schneems/codetriage-ko1-test-app,colinrubbert/codetriage,igas/codetriage,ojengwa/codewarrior,rvasqz86/codetriage,ngpestelos/codetriage,colinrubbert/codetriage,igas/codetriage,maclover7/codetriage,ferdinandrosario/codetriage,ferdinandrosario/codetriage,codetriage/codetriage,maclover7/codetriage