Hamburg Metadata update
Merge pull request #7 from SebastianBerchtold/master

Braunschweig
Many changes to the CKAN API v.3 script mostly for Bonn (many formats were missing). We also now save the metadata. And for Bonn the consolidated metadata is written out.
Bonn Metadata update
Koeln Metadata update
Assume catalog data is good
Change categorisation of licenses

I assumed, that "Use limitations:" "unbeschränkt" implies an open license.
This seems not be the case, since frequently next to this item under
"Access constrains:" the flag "copyright" appears.
Merge remote-tracking branch 'okfde/master'
Merge branch 'master' of https://github.com/mattfullerton/odm-datenerfassung