exercise - add interface for taking exercise
exercise - fix line breaks, styling
exercise - renamed exercise total fields, added utils error render for dev mode
exercise - remove controller test until user refactor
Merge pull request #9 from sosickstudios/exercise

Exercise - interface for taking exercises.
question model - refactor answers to be contained within model
answer - removed test spec to reflect removal of model
answer - removed all imports
question - pr review fixes
exercise.hbs - remove this for simpler syntax, removed extraneous log
exercise - update to documentation
fixed data migration script
finalized data migration