CDB-3497 Partial splitting
CDB-3497 Updating travis.yml to make it work with newer PG version
CDB-3497
CDB-3497 ongoing splitting
CDB-3497 Splitted
CDB-3497 ongoing spec stabilization
CDB-3497 Finished stabilizing specs
Merge branch 'master' into CDB-3497

Conflicts:
	Makefile
	NEWS
Merge pull request #44 from CartoDB/CDB-3497

Cdb 3497