The administration of the server is done using cli tools. So I don't
think that admin account and module is required. At least for now.
Note that this also remove `tbl_admin` creation in database migrate.
Since no release were made until this commit, the database migration
still in version 1. Manual removal database table for `tbl_admin`
is required on the existing running server.
Please note that this commit is not complete. I commit to the repo
because I have something to do with my another project. Just don't
want to lost my work for the last couple hours.