Dababix needs some privileges to provide the statisic data. You should create a separate user and grand them the following privileges (replace 'dababix'@'localhost' with your user):
GRANT SHOW DATABASES ON * TO 'dababix'@'localhost';
GRANT SELECT ON *.* TO 'dababix'@'localhost';
For now, there is no know way to use dababix with full features, but without global SELECT privileges. Without that, advanced per-database and per-table statistics are unavaible.