Fixed drivers to recalculate possible runs and update the earliest start
time every new day.
Changed prices.json: during some times the price is really low to force
PSO to put devices in here.
Added methods to write schedule to file, thus allowing for statistical
evaluation.
Changed price.json from giving all points to speciying only the price for
1kWh and the slope of the exponential function that approximates the price
curve.
Fixed project setup.