Implement XML input/output for AssetMetadata.
Add tests which validate XML using XSD.
Add last visited module path to course status API
Merge pull request #6051 from edx/jeskew/asset_xml_input_output

Implement XML input/output for AssetMetadata.
Update contact info for licensing questions
Merge pull request #6074 from stvstnfrd/requirements/license

RFC: Update contact info for licensing questions
Merge pull request #6076 from edx/gprice/last-visited-module-path

Add last visited module path to course status API