add method to retrieve standardization iri

For logics we'll need to refer to the standardization status
as a name as well as a iri. The new method will build the iri
from the name, if possible.
adjust xml view of a logic per example

The example
http://www.informatik.uni-bremen.de/agbkb/forschung/formal_methods/CoFI/hets/dol/logics/SROIQ
was being used as a blueprint for the current view. But there are
still some fields which we do not support, as we do not have the
necessary information.