UI polish
added comments and made logger private
FeatureSensitiveRanking method
#43 remove dead code
updated the ranking algorithm
rankingAlgo updated
Move the AttributeStat functionality to scored Attribute. scored
attribute can now be sorted according to entropy.
fixed a few bugs shoudl work good but still need to write tests
Merge remote-tracking branch 'origin/rankingAlgorithm_issue47' into
Issue0045

Conflicts:
	src/main/java/ca/mcgill/cs/creco/web/controller/SearchController.java
#43 Redesign Category Table and Product Table
Merge remote-tracking branch 'origin/master' into UILayout_M3
#43 remove bug code
fixed sign in entropy calculation, fixed entropy sorting
Merge branch 'Issue0045'
Fixed min and max bug where they were inverted.
Merge branch 'master' into Issue0050