Some more failsafes

Lactose/Jobs/Job.cs

@@ -33,6 +33,12 @@ public abstract class Job {
                     case EJobStatus.Failed:
                         Failed?.Invoke(this, JobStatus);
                         break;
+                    case EJobStatus.Running: // If still running or waiting, mark as completed
+                    case EJobStatus.Waiting: //somebody forgot to update the status and the method returned.
+                    case EJobStatus.Completed:
+                        Completed?.Invoke(this, JobStatus);
+                        break;
+                    case EJobStatus.Queued: // This should never happen
                     default: 
                         Completed?.Invoke(this, JobStatus);
                         break;

Lactose/Jobs/ThumbnailJob.cs

@@ -178,6 +178,7 @@ public class ThumbnailJob : Job {
                 return;
             }
         }
+        JobStatus.Complete("All thumbnails generated successfully.");
     }
 
     void IncrementProcessedAssets() {