Refs #7830 - Add changes to DOI generation.

* Changes to XML form, including a link from release DOI's to main DOI.
* Addition of patch version number.
* Author list now correctly scraped from Git based on version number.
* Ability to delete ("make inactive") the metadata of a DOI.
* Rename file.

The translation table and whitelist are now ready for edits from the rest
of the Mantid team, and the "description" field of the metadata still has
to be finalised.