Moved the no longer maintained JavaScript version of the incidents pre-processing scripts to _OLD
Differenciated the incidents.preprocess.save so that it can save the whole dataset or one file per borough
Removed the overall incidents save function, that would be never used

Yes I changed my mind twice in one minute
Fixed name of incident(s).preprocess.addFootfall function
Updated the script to add the 'default' footfall + attendance time score to the borough json definitions

... and generated an updated set of json files accordingly