Documentation added for XDG basedire support.
Tests added for XDG Base Path specs.
Removed obsolete properties.
Fixed a "super" call.
Fixed the loading procedure.
Added methods handling the XDG basedir spec.
All XDG Basedir tests pass!
Added a warning for a non-XDG based filename.
Merge branch 'xdg-basedir-support' into develop
docstrings added.