BUG FIX Frequency Maps
Fix "only direct code matches" frequencies
Pre-computed Progenetix CNV frequency histograms (e.g. for NCIT codes) are based
samples from all child terms; e.g.
NCIT:C3262 will display an overview of all
neoplasias, although no single case has this specific code.
However, there had been a bug when under specific circumstances (code has some mapped samples and code has more samples in child terms) only the direct matches were used to compute the frequencies although the full number of samples was indicated in the plot legend. FIXED.