Added new base object for all SemSim Types: SemSimObject. Moved name and
description variables and methods to new class. SemSimComponent and
SemSimModel now extend this class.
Added class URI for SemSimModel.
Replaced some class checks in SemSimOWLWriter with new getSemSimClass
method.
Removed JSimUnits table from SemSimConstants. All previous references
replaced with calls to SemSimLibrary (data previously contained in
constants class now loaded from text file at run time).
Deleted structuralRelationsRL.txt and removed LR sufix from
structuralRelationsLR.txt.
Added createSetfromFile to ResourcesManager.