Dupe crate action updates and fixes. (+2 squashed commit)

Squashed commit:

[0f4df4a] Added DuplicateUnitCrateAction.

[2787fa1] Clarity update. (+1 squashed commits)

Squashed commits:

[93ddc3b] Crate updates.
+Multiple units per crate allowed.
+Allow time delay on crate actions.