interim update; adapt HMRN model to load test hmrn database

patched HMRN data collection calculate_age params to allow for request_history array if duplicate authorisation action

HMRN data collection templates; extended HMRN potential new malignancies function to include known previous diagnoses list; renamed M::HMRN::Data::all_diagnoses() to all_icdo3_diagnoses() & modified for use with M::HMRN::get_previous_diagnoses()