implemented "setup-zero-user" target and added "skip-setup-zero-user" flag.
tweaked zero user setup properties.
changed db-install target to use a config file rather than passing the db password as command line option when invoking the "mysql" client. added basic output escaping for properties in SQL commands in the "setup-zero-user" target.
removed debugging output.
removed redundant task
Merge branch 'migrations' of https://github.com/ucsflibtopfstedt/ilios into ilios-tests