Merge branch 'release/2.1.06' into develop
Fix when boundary tokens are the same

When DataRange boundary tokens are the same (i.e. isSameToken == true), startName and stopName are both empty. In this case the resulting query will be null which will lead to whole index search.
Merge branch 'master' of https://github.com/tsouza/stratio-cassandra into tsouza-master

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Merge branch 'tsouza-master' into develop
Fix field sort.
Upgrade version.
Merge branch 'release/2.1.07'