* Remove Command line and GUI rendering code
* Add LayerSettings Class with all options
* Prepare to remove mapping parser. Is now integrated in LayerSettings
* Adopt all renderers to check if the supplied layer_info struct has to be rendered.
Further todos:
* Implement correct command line parsing.
* Implement Layerselector and GUI to use new LayerSettings class
* Move layer info struct and associated functions to dedicated c/h files.
* Rename layer selector folder more generic "layer"
Besides from restructuring nothing changes
