Javadoc

Cherry picked from aa13e8d2a52de8740363544d40029ae6e8688d6e
[PLAT-4625] method not found - PUT instead of GET for getViewportGridStructure

Cherry picked from 0ac5f09d556bd19a078be0c7981dae974ee66ddc
PLAT-4794 - Add human redable config descriptions

Cherry picked from 3d5895a4c57479eb663b496c26da5a94f6e5ab5e
PLAT-4792 - Unable to add config via web

Cherry picked from c7496adc44cf341a8ba960439c0f59be3d9da779
PLAT-4794 - Add human redable config descriptions