Fix: Instrument's file importer throws a jquery exception when submitting
ajax's call data option must be a string representation of a json array instead of an array of objects
Exception: Component returned failure code: 0x80460001 (NS_ERROR_CANNOT_CONVERT_DATA) [nsIDOMFormData.append]
Merge branch '3.01a' of github.com:bikalabs/Bika-LIMS into 3.01a