WS-2142 Weblog links

This makes the UI hit the new manager endpoint before showing or opening a weblog URL. If a pipeline directory name is returned by the manager then it will be appended to the previous weblog URL.

I had to involve the manager in this because the weblog pages are simply index.html files within the job/pipeline directories and are outside of the VLASS UI's control.

src/app/executions/execution/execution-detail/execution-detail-planes/execution-detail-planes.component.ts

@@ -77,14 +77,16 @@ export class ExecutionDetailPlanesComponent implements OnInit, OnDestroy {
 
     // Write out the planes string if any are selected
     if (planesText.length > 0) {
-      this.jobService.writePlanes(this.job.job_id, planesText).subscribe(() => {
-          // Trigger acceptQa on the parent
+      this.jobService.writePlanes(this.job.job_id, planesText).subscribe(
+        result => {},
+        error => {
+          this.alertService.error('Planes did not save. ' + error);
+        },
+        () => {
+          // Trigger acceptQa on the parent if there were no errors during the save
           this.planesWritten.emit();
 
           this.alertService.success('Planes Saved');
-        },
-        error => {
-          this.alertService.error('Planes did not save. ' + error);
         });
     }
   }