New Features for Entity LInker
Added a new getNamedEntities method to Java Stanford Helper
Changed LinkFeatureWriter to write a named entity set for a given kbid only once
Test Named Entity Overlap feature, started adding more context from news documents
Moved printlns
Change entityString to string represented in Freebase if there is no mapping to their KB
Merge branch 'GetAlternateStringFromFreebaseLink' into EntityLinkClassifierNewFeatures

Conflicts:
	src/main/scala/edu/knowitall/tac2013/entitylinking/RunKBPEntityLinkerSystem.scala
Add headline context if it is not already in coref context
Merge pull request #38 from jgilme1/EntityLinkClassifierNewFeatures

Added Headline Context