fixed multiWeightedFacet relevance and added test case for this
Merge remote branch 'wonlay/master' into custom-func
added one more method for getWeight in weightedMultiFacet relevance
More reliable bql compiler.
fix weighted string getWeight(String)
Enable the kafka gateway listening on multiple topics.
expose kafka config properties.
added static _RANDOM variable for relevance usage
added test for random variable
Merge remote-tracking branch 'sguo/master'
added _RANDOM as keyword
added BQL support for the new internal variable _RANDOM
Merge remote-tracking branch 'sguo/master'
add indexing latency metrics.
use timer for indexing latency.
Added long as the activity type. Also fixed the bug when the activity
value is set to zero, when the corresponding document is updated in
hourglass
Fixed the problem with long range activity query
Fixed the init from file issue at USCP
Added the test for long activity bootstrapping
Merge branch 'master' of https://github.com/wonlay/sensei

Conflicts:
	sensei-gateways/src/main/java/com/senseidb/gateway/kafka/KafkaDataProviderBuilder.java
	sensei-gateways/src/main/java/com/senseidb/gateway/kafka/KafkaStreamDataProvider.java