WS-797: Polishing QA process

Changes

Back-end

• Added new determine_state method to CapabilityRequest that will determine request state automatically, based on the state of its versions
• Capability execution state transitions now occur before the action is performed, so effectively the action is performed from the next state

UI

• "Submit" button now appears based on the state of the selected version rather than the state of the request
• The request's latest version is now selected by default in the dropdown
• Removed extraneous QA-pass button

Completes WS-798 and WS-801

shared/workspaces/test/test_states.py

@@ -23,7 +23,6 @@ The objective of this file is to help with prototyping and testing the capabilit
 from typing import Callable, Dict, List
 
 import pytest
-import requests
 
 
 class Noop: