Add a dict to keep track of parameter requirements
Add generic means for turning on or off some indicators
Add error handling for missing data and extra logging for celery
Fix extra indentation
Convert Json to Scala val naming convention
Use bool instead of if/then
Merge pull request #315 from moradology/feature/handle-missing-params

Feature/handle missing params
Add Dwell Time performance indicator
Rename files and classes to reflect proper indicators
Add indicator for traveltime performance
Type signed and commented code more heavily
Do or do not, there is no try
Break code into multiple lines for readablity
Fix extra indentation
Fix minor typo