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

apps/web/src/app/workspaces/components/capability-request/capability-request.component.ts

@@ -85,8 +85,12 @@ export class CapabilityRequestComponent implements OnInit, OnDestroy {
     next: (capabilityVersion) => {
       if (capabilityVersion !== undefined) {
         this.latestVersion = capabilityVersion;
-        // Set selected version to be the request's current version if no version is selected
-        if (this.currentVersion === undefined) {
+        // Set selected version to be the request's latest version
+        // If no version is selected or if the selected version is the latest version
+        if (
+          this.currentVersion === undefined ||
+          this.currentVersion.version_number === this.latestVersion.version_number
+        ) {
           this.setVersion(this.latestVersion);
         }
       } else {