Make start and end date parsing more sane
Make start and end date parsing more sane

closes [#SHARE-31]

fabianvf/scrapi,felliott/scrapi,fabianvf/scrapi,alexgarciac/scrapi,CenterForOpenScience/scrapi,erinspace/scrapi,mehanig/scrapi,felliott/scrapi,mehanig/scrapi,erinspace/scrapi,CenterForOpenScience/scrapi