[REVIEW] Fixed dbpatch by using janus database parameters

Fixes usage of janus db config which is no longer in a php file
Well composers's autoloading is being used anyway to load Symfony/Yaml so it is there already, I rather have one autoloading system than two. The way dbpatch is shipping Zend is a little weird anyway, it should just require it instead (and with proper autoloading). That said the solution comes from Zend Framework itself: http://framework.zend.com/manual/1.10/en/performance.classloading.html