updates for hobbs algorithm

@linas 

It can do basic pronoun resolutions correctly right now.
AND conjunctions are now supported, other conjunctions are not supported.

Just started working on https://groups.google.com/forum/#!topic/opencog/gzA3uL26AwM

Some testing results which are marked as "Failed" should be marked as "Passed", I only have corrected some of them.  All the testing results will be updated in the next pull request.



Yes, for this 'strange' return value, please do.  However, each of the individitual filts should get illustrations for the kind of sentences that they are trying to block or fix.