Dsc 807

Hi Shaun,

This request includes parsing of date range for collection work and component works for indexing.  It also included several additional EAD fields which was missed previously.  Could you please review these changes?

Thanks,
Shuang
ha! sorry - github markdown has messed with it: 

try: `{ "(\\d{4,4})\\s*[\\s\\-\\./](.*)", "(.*)\\s[\\s\\-\\./](\\d{4,4})" }`