New function that when run, will clean the database by removing duplicate tags from either all categories or a specific one.
Comment cleanup from previous commit
Includes ranking algorithm along with its correlated SQL functionality in SQLAccess.
Removed ranking file
standalone ranking algorithm script, should be compiled and run alone
Merge branch 'master' of https://github.com/CXCS130-Fall-2014/cxcatalogapi
fix cum count in ranking
Merge branch 'database3'

Conflicts:
	service/src/main/java/com/shopzilla/service/shoppingcart/resource/ShoppingCartResource.java
add 3 categories:clothes, cars, electronics
put in 3 different files
three keywords ranking
Merge branch 'master' of https://github.com/CXCS130-Fall-2014/cxcatalogapi

Conflicts:
	ranking/src/.DS_Store
three cat
add brandnames
fix ranking algo
Added category buttons

* passes category to function in ShoppingCartResource
Clearing old items
formatting fix