[metadata] Check data package requirements

[Ludee]

http://frictionlessdata.io/specs/data-package/#required-properties

• [x] include "name"
• [x] validate with python package

[christian-rli]

validated string with python datapackage-py (https://github.com/frictionlessdata/datapackage-py) current version is not compatible. Specific shortcomings are:

• "A Contributor MUST have a title property and MAY contain path, email, role and organization properties." (https://frictionlessdata.io/specs/data-package/) . The current version only had a name. Other properties are than those mentioned were accpeted. i changed all occurences of "name" in contributors to "title"
  • resources property must have a path (https://frictionlessdata.io/specs/data-resource/). The current version did not specify one, as all resources are tables in oep. I included a path to the github repository of the json string itselt.

The strings that were made compatible in the described way are upoloaded in the examples repository (commit: https://github.com/OpenEnergyPlatform/examples/commit/e662364222b7a094cec1159577de0e49781c986d)