scaladoc add in pom
Remove unnecessary MetaQuery reference
Merge branch 'develop' of github.com:Stratio/stratio-meta into develop
Merge branch 'develop' of github.com:Stratio/stratio-meta into develop
Create classes for sending API commands to the server.
Working on the API actor implementation.
Implement list catalogs and tables in the APIActor
Adding metadata structures
Create Abstract metadata helper to translate db metadata implementations into a generic ones for the API.
Refactor driver to retrieve new generic metadata.
Merge branch 'develop' of github.com:Stratio/stratio-meta into develop
Merge branch 'develop' of github.com:Stratio/stratio-meta into develop
Merge branch 'driver-metadata' into develop

Conflicts:
	meta-core/src/main/java/com/stratio/meta/core/executor/CommandExecutor.java
	pom.xml
Merge branch 'develop' of github.com:Stratio/stratio-meta into develop
Adding planner and validator implementation; they need to be tuned up
Bug fixed in parser for groupBy selection
Fix bug related with the order of the columns returned in the ResultSet.
Modify ResultSet to send the new type of ColumnMetadata.
Bug fixed in parser for groupBy selection
Selector GroupBy only accepts one parameter
Use deep 2.7