It would be very useful to be able to take advantage of all the new data manager features when working in a separate admin application (i.e. not the base Preside application). The data manager screens would then take on that admin application's layout and menu systems.
Proposed initial, simple implementation:
Any Preside object could have a `@dataManagerAdminApplication` attribute defined, so that object would always be managed within a specific admin application. The "Home" breadcrumb link should then link to that application's home.
Future enhancement could be:
implement a data manager customisation, so custom logic could be run globally or on a per-object basis to decide what application to use.
allow a separate datamanager object listing within an application to include only that application's objects