General clean-up

Removed a number of unused methods, and added a simpler one to satisfy #16
Initial backend overhaul

Removing sessions in favor of a unique auth_code introduced in 117249adb41cc845cbdea6c25ffe5d0009a1fc11.
Adding new endpoint for badges
Adding endpoint for ratios
Assert variables for badge data
Ensure agent is valid
Adding endpoint for retrieving single stat data
Correcting field to evaluate
Removing old endpoints
Rewriting Badge Prediction routine
Moving json_encode to controller
Reducing entries into Data table
Specifying column names for insertion
General clean-up

Removed a number of unused methods, and added a simpler one to satisfy #16
Initial backend overhaul

Removing sessions in favor of a unique auth_code introduced in 117249adb41cc845cbdea6c25ffe5d0009a1fc11.
Adding new endpoint for badges
Adding endpoint for ratios
Assert variables for badge data
Ensure agent is valid
Adding endpoint for retrieving single stat data