Merge pull request #1 from NuCivic/7.x-1.x

rebasing from NuCivic
Added option to combine regular 'Add dataset' form with 'Additional Info' section
fixed typo
fixed wrong default for dkan_dataset_form_additional_info variable
Merge pull request #47 from upieper/dkan_issue_202_Proposal_to_change_Additional_Info

Dkan issue 202 proposal to change additional info