Clean configurating ModelProcessors
Add builder for ValidatorProcessor
Extract ValidatorWriterManager interface
Improve ValidatorProcessor builder - remove nulls
Add default values for ValidatorProcessor
Add builder for DefaultValueGenerator
Change javascript.writer.OutputMode.NORMAL to JAVASCRIPT

JAVASCRIPT desribes the mode better. Normal doesn't really tell how it is
"normal". JavaScript should be much more clearer when reading the code.
Add generics based BaseDataWriter

Added BaseDataWriter that can be used for extending language specific
writers. New BaseDataWriter makes easier creating DataWriters because now
you don't need to manually delegate the basic DataWriter methods. Now
those are handled by the generics system.
Added BaseDataWriter support for JavaScriptWriter