Moved tsw directory location print to dispatcher
Use constant instead of mystery number
Abstract RdbExporter into RdbDataExporter abstract class and
RdbGenericDataExporter concrete class

This is to make customisation with specific datatypes easier. i.e. string
export and model+texture export in the future. This requires specific data
writers and the ability to output to canonical filenames
Made writing to file overrideable, so client subclasses of RdbDataExporter
can do custom file names and DataWriter
Adapted to allow new client code
Removed the All language option, now only allowed to export strings as
french, german, english
Updated README

Added Known Issues sectioUpdated README

Added Known Issues sectinn
Removed redundant imports