CDB-3695 let's see if tests pass, manual ones were successful
CDB-3695 better error reporting if missing download url
CDB-3698 Now deleting syncs upon user destruction
Merge pull request #647 from CartoDB/CDB-3698

CDB-3698
Merge pull request #648 from CartoDB/CDB-3695

Cdb 3695
Duplicate ES body variable
[CDB-3703] cdb-user is not longer a domain

Just a username
Merge pull request #649 from CartoDB/CDB-3696

CDB-3696
Merge pull request #650 from CartoDB/CDB-3696

CDB-3696