interim update; adapt HMRN model to load test hmrn database

added new param to data collection - serun flc's

pre-screen worklist can specify required cols; new function for hiv chart get max value; added new data point to QLABS data feed; added HMRN PET scan templates

corrected rounding error in user_workload.tt; added params to plasmacell data collection template

error_log cron; missing data collection template for plasma-cell category

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()