FeatureSensitiveRanking method
updated the ranking algorithm
rankingAlgo updated
Merge remote-tracking branch 'origin/rankingAlgorithm_issue47' into
Issue0045

Conflicts:
	src/main/java/ca/mcgill/cs/creco/web/controller/SearchController.java
fixed sign in entropy calculation, fixed entropy sorting
Merge branch 'Issue0045'