New data structure DHashMultimap
Benchmark results for DHashMultimap
Make DHashMultimap available for all reflection-based stuff
Write profiler's best, worst, and current case into the standard stats.values to ease aggregation

Conflicts:
	config/io/names.properties
Bugfix in Profiler.finish() which printed RecommenderEntry but not ComparableEntryMap string representations
Once more: reduce complexity of GeneratorsTest and BatchTest
Profiler: write out graphical access statistics
Bugfix: in the case of Graph.getEdge(n1, n2), the dummy edge did not work properly
Default of plotting access statistics should be completely OFF
Some more fixes for the DummyEdge bug, and more thorough testing