This MR removes the automatic insertion of NameTag and Identifier GeoModel nodes when processing <logvol> XML entities in GeoModelXml.
Now, NameTags and Identifiers are inserted only when requested; i.e., when the relevant, optional flags are specified in the corresponding XML entity.
It also fixes a crash on hardcoded position of PV, by commenting call to the not-used addAlignable function (at the moment, it only prints log msgs).