CVS commit by staikos: various bugfixes for labels, the view, and mouse handling enhance the context menu to allow the user to easily add and remove curves and delete plots M +2 -4 kst.cpp 1.50 M +2 -1 kstlabel.cpp 1.17 M +4 -2 kstmouse.cpp 1.11 M +1 -0 kstplot.h 1.15 M +82 -7 kstview.cpp 1.36 M +12 -0 kstview.h 1.18