DroppableBehavior: Do not drop on morphs with dropping disabled
DroppableBehavior: Do not drop on morphs with dropping disabled

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