Fix orderByColumn can be null
Fix orderByColumn can be null

justcarakas/forkcms,jonasdekeukelaere/forkcms,forkcms/forkcms,sumocoders/forkcms,DegradationOfMankind/forkcms,Katrienvh/forkcms,mathiashelin/forkcms,carakas/forkcms,mathiashelin/forkcms,tommyvdv/forkcms,jonasdekeukelaere/forkcms,tommyvdv/forkcms,tommyvdv/forkcms,DegradationOfMankind/forkcms,jonasdekeukelaere/forkcms,carakas/forkcms,jeroendesloovere/forkcms,forkcms/forkcms,riadvice/forkcms,jessedobbelaere/forkcms,DegradationOfMankind/forkcms,sumocoders/forkcms,bartdc/forkcms,tommyvdv/forkcms,sumocoders/forkcms,carakas/forkcms,jeroendesloovere/forkcms,Katrienvh/forkcms,mathiashelin/forkcms,DegradationOfMankind/forkcms,Katrienvh/forkcms,sumocoders/forkcms,jacob-v-dam/forkcms,jessedobbelaere/forkcms,riadvice/forkcms,jeroendesloovere/forkcms,bartdc/forkcms,justcarakas/forkcms,jonasdekeukelaere/forkcms,forkcms/forkcms,Katrienvh/forkcms,riadvice/forkcms,carakas/forkcms,sumocoders/forkcms,jonasdekeukelaere/forkcms,jessedobbelaere/forkcms,jacob-v-dam/forkcms,forkcms/forkcms,carakas/forkcms,bartdc/forkcms,justcarakas/forkcms,mathiashelin/forkcms,riadvice/forkcms,jessedobbelaere/forkcms,jacob-v-dam/forkcms,jeroendesloovere/forkcms,jacob-v-dam/forkcms