HGM searching: search for either motives or famililies, all entry boxes ok except for conductor
Activating links in HGM family browse table
Completing searching for hgm's and their families, plus one small bug fix in utility parse_range.
Fixing problems with hgm search code.
Merge pull request #139 from jwj61/hgm

Hgm search improvements
Merge remote-tracking branch 'upstream/master'