Fix a source of test non-determinism -- reset system properties. Also shorten load test.

git-svn-id: http://myrrix-recommender.googlecode.com/svn/trunk@636 0d189622-dca1-7e23-9e30-e8815eb7bd2f
Fix to last commit to ensure only 1 iteration happens

git-svn-id: http://myrrix-recommender.googlecode.com/svn/trunk@637 0d189622-dca1-7e23-9e30-e8815eb7bd2f
Issue 78: If model.features is too low to build a model, it will be automatically lowered so that a model can be built

git-svn-id: http://myrrix-recommender.googlecode.com/svn/trunk@638 0d189622-dca1-7e23-9e30-e8815eb7bd2f