[+] Create method to get completion status

#3

src/logic/course.ts

@@ -66,6 +66,21 @@ export class Assignment
         return this.include && (this.complete == 'Complete' || this.complete == 'Late' || this.complete == 'NREQ');
     }
 
+    /**
+     * What is the problem with this assignment
+     *
+     * @return string Empty string if complete, otherwise return problem.
+     */
+    get problem()
+    {
+        switch (this.complete)
+        {
+            case 'Complete': return '';
+            case 'Late': return 'Late';
+            case 'NREQ': return 'Dropped';
+        }
+    }
+
     /**
      * Add callback
      *