lively.morphic.List: removing redundant list state. only list.selectedIndexes is used for holding the selection state of the list. selection and selectedLineNo are now virtual attributes
lively.morphic.List: removing redundant list state.
only list.selectedIndexes is used for holding the selection state of the list.
selection and selectedLineNo are now virtual attributes

NikolaySuslov/LivelyKernel,LivelyKernel/LivelyKernel,LivelyKernel/LivelyKernel,NikolaySuslov/LivelyKernel,LivelyKernel/LivelyKernel,pascience/LivelyKernel,pascience/LivelyKernel,NikolaySuslov/LivelyKernel,pascience/LivelyKernel