improvement to feature highlighter
improvement freaquency counter
SentiPropHolder updated
Merge remote-tracking branch 'upstream/master'

Conflicts:
	Backend/src/main/java/com/sigmacr/back/execution/ClassifierExecutor.java
	Backend/src/main/java/com/sigmacr/back/execution/IRExecutor.java
Ontology updated.
amazon serach in frontend
why link api. For pula ease.
OBIE Feature Extractor updated to skip doc if processing takes too long. Realtime pipeline used.
Product Description
added document Comparator
Merge remote-tracking branch 'upstream/master'
Product reviews html page updated
Merge remote-tracking branch 'upstream/master'

Conflicts:
	SentimentAnalyzer/src/main/java/sigmacr/sentianalyzer/constants/SAPropertyHolder.java
getStarRate Method
Merge remote-tracking branch 'upstream/master'
linked product type in jsp,js files
Fixed return values and package name
Added why link support as in #29. Need to test after the #38 is fixed