Fix events camelcase

[macklus]

This commit fix events camelcase names, that stop working with message:

Vue tip]: Event "oncomplete" is emitted in component <FormWizard> but the handler is registered for "onComplete". Note that HTML attributes are case-insensitive and you cannot use v-on to listen to camelCase events when using in-DOM templates. You should probably use "on-complete" instead of "onComplete".