Started on various experiments with evolutionary strategies.
Merge branch 'master' of github.com:larsga/Duke into evolution-strategies-experiments
Now possible to set mutation rate and recombination rate on command-line.
Reduced changes of testMutate() failing because of pure bad luck.
Lots of experimental changes to test the effect of question filtering.
Cleanup of the code so we can think about merging it.
Merge branch 'master' of github.com:larsga/Duke into evolution-strategies-experiments

Conflicts:
Merging with master.	buildNumber.properties
Documented changes merged in from experiments branch.
Added better error checking to NTriples parser.
Added a little more background to the Bayes calculation.
Added small bug in active learning filtering, and added integration test for it.
Upgraded to newer MapDB version with fix for serious error.
Merge remote-tracking branch 'upstream/master'

Conflicts:
	buildNumber.properties
	src/main/java/no/priv/garshol/duke/databases/LuceneDatabase.java