Abstract serialization concept to pure virtaul class RsSerializable
from which every other serializable class must inherit from
Use RapidJSON for JSON manipulation
Add TO_JSON and FROM_JSON SerializeJob
Deprecate unused SerializationFormat
Remove some unused old piece of code
Adjust many lines to max 80 columns for better readability on little
screens
Clean up documentation and code, remove old cruft
Add copyright notice on edited files that miss it
