Merge pull request #8 from mtpereira/fixes_tests

Fixes and local tests
Fix typo in variable naming
Merge pull request #9 from jewilmeer/issue-fix-typo

Fix typo in variable naming
tasks to ensure ssl key and cert are owned postgres user
Merge pull request #11 from jacoelho/ssl_files_permissions

SSL files permissions
Added user and database management.
Merged users_simple.