Merge pull request #27 from rbart/classifier

Add Mention Pair classifier
Added 2011 Resources
Merge branch 'master' into add2011Resources
Changed to LinkClassifier constructor
Merge pull request #28 from jgilme1/add2011Resources

Add2011 resources
Added a backoff for finding resources with directory path rather than class path
KBPQuery deactivate method
Began writing a Sports Context Classifier
Merge pull request #29 from jgilme1/sportsClassify

Sports classify
Made a couple changes to location alternate string finding.
Merge pull request #30 from jgilme1/locationListBug

Made a couple changes to location alternate string finding.
Many changes.
Cache mention term vector and make features lazy vals.
Fix 10 to 1 neg to pos mention pair training, update to non-global kbpqueryhelper.
Factor out KBPQuery global mutable state into KBPQueryHelper class
Remove global mutable state and update to use KBPQueryHelper
Make KBPQueryHelper fields non-optional