Initial postgresql support
Make it possible to test postgresql and mysql on travis
query fixes for PostgreSQL
Don't use transactions for postgresql tests
Merge pull request #145 from graudeejs/postgresql

Add support for PostgreSQL
Fix issue #136
Merge pull request #148 from graudeejs/issue_136

Fix issue #136
Releaf::I18nDatabase::Backend remove unused assignment
Merge remote-tracking branch 'origin/master' into form_builder