Allow menus to have domain assignment so that menu and menu link administration can be linked to domain access.

The module intention is to allow each domain to have its own set of menus like a main menu or footer menu to be administered by users with administrative permissions limited to specific domains.

Feature summary

* Menus can be assigned to domains
* Configurable number of domain menu sets
* Bulk create and delete option
* Auto-create/auto-delete domain menus on domain create/delete
* Active domain domain menus block