codeeditor: allow to set line end mode and tab width via menu
codeeditor: allow to set line end mode and tab width via menu

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