Fix Request for AvoidImproperAnnotationCombinations

[jborgers]

Combining 1. [@]Component and [@]Data is typically wrong, yet, combining 2. [@]Configuration and [@]Data is less clear.
[@]Components are not meant to be passed around or put in collections, should preferably be stateless. State in Components must be made thread-safe.
[@]Configuration is actually data, where Spring calls the getters once and caches the values. Setters may also be called, just once, to initialize (depending on how Spring implements it).

[jborgers]

Also add proper documentation.