Added count support(with column). Fixed StatsTrend
member variable name change for count
Merge branch 'master' into count

Conflicts:
	foxtrot-common/src/main/java/com/flipkart/foxtrot/common/query/Filter.java
	foxtrot-common/src/main/java/com/flipkart/foxtrot/common/query/FilterOperator.java
	foxtrot-common/src/main/java/com/flipkart/foxtrot/common/query/FilterVisitor.java
	foxtrot-core/src/main/java/com/flipkart/foxtrot/core/querystore/actions/Constants.java
	foxtrot-core/src/main/java/com/flipkart/foxtrot/core/querystore/actions/TrendAction.java
	foxtrot-core/src/main/java/com/flipkart/foxtrot/core/querystore/query/ElasticSearchQueryGenerator.java
	foxtrot-sql/src/main/java/com/flipkart/foxtrot/sql/QueryTranslator.java
Added distinct to count
Table name fix. Remove any special character excpet for hyphen
Merge pull request #3 from flipkart-incubator/count

Added count support for events. Distinct counts for each field. Fixed trend field name.