Task 6070:Role list Toot tip not working in production

1) expense type output js renamed as it was conflicting with group list
output js.
Task 6072:System admin has access to calender in administration menu

Calender link access in administration menu restricted to only role admin.
Leave choose category option added (#6062)

The category select is extended by a choose option with
empty value.
Auto assignment of category for SLR changed to validation.
Edit user removes assigned roles bugfix (#6071)

The definition of user administration allows a system
administrator only to assign roles lower than his highest.
If user has roles system admin, role admin is only allowed
to edit this record. ROLE_SYSTEM_ADMIN added to list of
admin roles for ACL in user controller and fix user
permission command class.
User type form allowed roles are now retrieved via
getReachableRoles from RoleHierarchy class.

TODO: For existing setups, the command needs to be run using
the --force option to recalculate the ACL.