Reorganize the config structure, to make it easier and more intuitive:

• a subfolder for map-configurations where each map has it's own config file
  • adding a new map = adding a new config file
  • the name of the config file will be used to create the map's id
  • new marker section where static markers can be defined for a map
• new webapp.conf which includes settings only for the webapp
  • add more webapp-settings like min-max zooms and render-distances, turning on and off buttons and features
• remove render.conf

It would be handy if the configurations can create from the API. So that you can dynamically add and remove worlds. So a single world can be re-rendered when it has been unloaded.

Implemented in 2.0