improve logging output for humans and jsons
set celluloid logging to nil
fix features for install and json_formatter
reduce logging for install
less verbose install output for json format
Merge pull request #865 from RiotGames/bs_3

Berkshelf 3 Fixes - Logging and Output
Merge pull request #869 from cjerdonek/issue-867-git-location-display

improve git location display for issue #867
Address issue #871: Have github locations inherit the to_s of git locations.