Fix ILM Session hours
Fix ILM Session hours

Doctrine stores decimals as strings for precision, we can map it back to
a float because we're not worried about that much precision here.

thecoolestguy/ilios,Trott/ilios,thecoolestguy/ilios,ilios/ilios,dartajax/ilios,ilios/ilios,Trott/ilios,stopfstedt/ilios,dartajax/ilios,stopfstedt/ilios