DataObjects doxygen warnings

...Framework/DataObjects/inc/MantidDataObjects/TableColumn.h

Code/Mantid/Framework/DataObjects/src/EventList.cpp

Code/Mantid/Framework/DataObjects/src/MaskWorkspace.cpp

Code/Mantid/Framework/DataObjects/src/RebinnedOutput.cpp

Code/Mantid/Framework/DataObjects/src/SpecialWorkspace2D.cpp

Code/Mantid/Framework/DataObjects/src/SplittersWorkspace.cpp

Code/Mantid/Framework/Geometry/src/Objects/RuleItems.cpp