Fix zlib1g-dev errors
Fix zlib1g-dev errors

sumocoders/forkcms,jessedobbelaere/forkcms,jonasdekeukelaere/forkcms,forkcms/forkcms,bartdc/forkcms,forkcms/forkcms,sumocoders/forkcms,jonasdekeukelaere/forkcms,jonasdekeukelaere/forkcms,justcarakas/forkcms,jessedobbelaere/forkcms,jessedobbelaere/forkcms,jacob-v-dam/forkcms,forkcms/forkcms,jacob-v-dam/forkcms,forkcms/forkcms,sumocoders/forkcms,jacob-v-dam/forkcms,jessedobbelaere/forkcms,jonasdekeukelaere/forkcms,justcarakas/forkcms,jacob-v-dam/forkcms,sumocoders/forkcms,bartdc/forkcms,sumocoders/forkcms,bartdc/forkcms,jonasdekeukelaere/forkcms,justcarakas/forkcms