Fixes Author and Copyright info for Editor - None

Just a tiny cosmetic fix:

I do not know if this is wanted for political or legal reasons, but in
Extensions Manager, Editor - None is listed as having an "Unknown"
author.
I fixed this by adding the required info in none.xml
There is an inconsistency, anyway: the "Creation Date" is set as "August
2004", while the standard Copyright notice says "2005 -2014"
Fixed creationDate
Merge pull request #5171 from smanzi/EditorNoneCopyright

Fixes Author and Copyright info for Editor - None