Moved org.eclipse.ui.views.markers.MarkerItem to org.eclipse.e4.ui.ide
Moved MarkerItemDefaults to org.eclipse.e4.ui.ide
Added MarkerItemDefaults#PATH_ATTRIBUTE and switched
MarkerViewUtil#PATH_ATTRIBUTE to it


Change-Id: I67711e3f53a6819031249f0bde69cf810277c959
Signed-off-by: Alexander Fedorov <alexander.fedorov@arsysop.ru>