Step outputs data from prev state and new state
Added demo exercise pages
Added redis conf file
Refactored git spawn into function

Added initial commit getting function
Added function to simulate collaboration
Added repo reset on 'go'
Client initiates sync

Removed unused variable in exerciseUtils
Added client
Fixed bug preventing re-sync of started exercise
Changed path to exercise directories
Added server-side exercise resources
Added client-side exercise resources
Codestyle fixes