[O] Optimize isGradingReady() with Array.every()

src/components/app/app.ts

@@ -224,7 +224,7 @@ export default class App extends Vue
         }
 
         // Wait for done
-        pWaitFor(() => this.isGradingReady()).then(() =>
+        pWaitFor(() => this.filteredCourses.every(c => c.grading != undefined)).then(() =>
         {
             // When the assignments are ready
             // TODO: Display loading
@@ -232,24 +232,6 @@ export default class App extends Vue
         })
     }
 
-    /**
-     * Are grading algorithms ready or not.
-     *
-     * @returns boolean Ready or not
-     */
-    private isGradingReady(): boolean
-    {
-        for (const course of this.filteredCourses)
-        {
-            if (course.grading == undefined)
-            {
-                return false;
-            }
-        }
-
-        return true;
-    }
-
     /**
      * This is called when a navigation tab is clicked
      *