Updated AdminUser.generate method.
Updated AdminUser.generate method.

If `options[:role]` is not passed use `Typus.master_role`.
If `options[:password]` is not passed generate a random password.

baban/typus,burn-notice/typus,readyfor/typus,wollzelle/typus,baban/typus,wollzelle/typus,brainsome-de/typus,chiragshah/typus,brainsome-de/typus,typus/typus,typus/typus,oruen/typus,thirdthing/typus,readyfor/typus,burn-notice/typus,wollzelle/typus,readyfor/typus,typus/typus,chiragshah/typus,brainsome-de/typus,oruen/typus,baban/typus,typus/typus,burn-notice/typus,baban/typus,thirdthing/typus,thirdthing/typus,brainsome-de/typus,thirdthing/typus,wollzelle/typus,readyfor/typus,burn-notice/typus,chiragshah/typus,chiragshah/typus