close #176 #178 #179 #190 #177 #174

Adding container URL to each document
Change relative url to absolute URL in get_document_details
Clean up a bit

allows you to fetch more infos about a document. e.g.: Abstract

also some dates for old meetings could not be parsed, I also fixed it.
Add an example on how to find a list of people who contributed to
specific standard (based on the title of the input doc)

implement parsing of meetings and input documents
Close #175 #173 #182 #189