Possible better and cleaner ticket implementation

[d-w-moore]

It seems possible both client and server aspects of handling tickets could be more straightforward, from a library perspective.

Investigate:

• do queries for a data object in the Python client need to be more complicated when access is granted via their parent collection? Is this due to a mirroring complication in the server?
• do icommands handle things more directly when accessing/querying objects via tickets?
• how does the server implement tickets, and can it be improved / replaced?