CVS commit by okellogg: Fix for "copy/paste [of a usecase in the list view] creates _two_ copies instead of one" CCBUG:97887 M +25 -8 umllistview.cpp 1.145 M +34 -64 clipboard/umlclipboard.cpp 1.26 M +1 -2 clipboard/umlclipboard.h 1.12 M +69 -18 clipboard/umldrag.cpp 1.29