Avoid bean serializations / use ApplicationScoped instead Dependent for performance reasons

Currently QueryHandler is Dependent and a instance will be created for every repository.
QueryHandler can be ApplicationScoped to avoid serialization if the user doesn't set a scope to the repository.

Classes which doesn't need to implement Serializable (and doesn't need a serialVersionUID):
QueryBuilderFactory
RepositoryComponents
QueryHandler

Classes which can be ApplicationScoped:
QueryBuilderFactory
TransactionalQueryRunner
QueryHandler