navl schema: require resource fields dynamically
navl schema: allow override of required resource fields
navl schema: fix for mandatory resource fields
navl schema: another fix for required resource fields
tests: fix for now-required resource fields
Merge pull request #158 from wardi/master

properly require resource field in navl schema, allow override
make license a choice field (with one choice)
schema description: update for license change
dataset form: default choice fields with one choice to that choice
add licenses.json file to public dir
move licenses.json to /static
licenses.json should be in a list
document configuration required for license list
Merge pull request #159 from wardi/master

Dataset form: add license drop-down, and add required static licenses.json file
Merge remote-tracking branch 'upstream/master'