GUI improvements for generic synchronization

We need at least:

1. Shadow details: to display various intents and kinds (not only accounts). Add new columns: intent, kind, allow filtering. Add new column "owner" to display owner just like in Resource - Accounts. Hint: what if I run dry-run reconciliation and go to Shadow details? Is it possible to display the owner even then? (I.e. it's not real owner, but a supposed one.......)

2. Resource - Accounts: detto

3. Reconciliation: allow to run recon only for certain kind and intent

4. join the functionality of Resource-Accounts and Shadows details, to be able to import single accounts, change owners etc. from BOTH views.