IdStory Identity Manager

I need to be able to generate login when saving user.
Currently we mainly generate login in synchronizacion worflow from HR. But i need to cover same generating logic for all user creations including manul setup by administrartor and more identity sources.

My suggestion (consulted with Zdeněk) is:

- Create new configuration property with name of script for login generating.
- Create default script which returns just null
- Before create new user, if his login is null -> use generating scrip from configuration -> and if login is still null after script (default) -> use same validion on frondend as it is now, so let user fill it manually.

So with default script, behavior of IdM will same as it is now.