Fix grammar for SELECT *
Change validator
Merge branch 'future/0.1.0' of github.com:Stratio/stratio-meta into future/0.1.0

Conflicts:
	meta-core/src/main/java/com/stratio/meta2/core/engine/validator/Validator.java
	meta-core/src/main/java/com/stratio/meta2/core/query/ValidatedQuery.java
	meta-core/src/main/java/com/stratio/meta2/core/statements/SelectStatement.java