- Adds test cases for incremental inserting.
Adds similarity library
- Adds test cases for incremental inserting.
Adds similarity library
Adds qatar living vehicles dataset.
Merge remote-tracking branch 'origin/er' into er

Conflicts:
	ruleext/src/qa/qcri/nadeef/ruleext/template/ERRuleBuilder.stg
	test/src/qa/qcri/nadeef/test/core/ERDetectionTest.java
	tools/src/qa/qcri/nadeef/tools/Metrics.java
 Adds qatar living vehicles dataset (adds csv data).
- Adds support for boolean and datetime type.
- Fix bugs in the Dashboard, adds DC support.
- Adds extra interface for violation query (rule name matching and violation limit).
- Adds dedup service.
- Adds initial framework for test app of qatar car sales.
- Adds Guava 15.0 support.
- Clean the project deps.
- Adds exception handler for rule detect / repair  itself.
- Adds better Log4j support (-Ddebug).
- Minor bug fixes.
- Minor bug fixes.
Merge branch 'er'