Consolidate queryable Funcs as delegates.
Pare down Entity contracts.
Rename for accuracy.

...and Frodo.
Move implementation code to separate namespace.
Push query logic down a layer.
Filter the ticket list.

Fixes regression from a few commits ago.
How'd that slip through?
Nitpick style.
Optimize performance.

Due to highly scientific analysis mixed with a healthy prejudice against
LINQ operators.
Why won't VS refactor this for me?