speed up tests for simple German by not running the concurrency tests and not re-running the de-DE tests
small test speedup (but still slow...)
start cleanup of AnalyzedGermanTokenReadings as a preparation for removing it
remove AnalyzedGermanTokenReadings; also remove the "NIL" special case in CaseRule that is not needed anymore, as the Morphy data has been cleaned up some time ago
small code cleanup
document removal of AnalyzedGermanTokenReadings