Using order status where order state should be used

While reviewing some issues a client was facing with the module, we noticed that the default views for this module sometimes incorrectly use "order status" instead of "order state", and are passed order states. This causes some issues throughout, such as some orders not showing up properly, and in general is inconsistent when views filters have a label of "order status" and are actually "order state".

Cleaning up the labeling, the comments, and the places where status is actually incorrectly will help with both functionality, and clarity for those reviewing the code later.