[O] Optimize loadCourses request

src/components/app/app.ts

@@ -93,34 +93,23 @@ export default class App extends Vue
      */
     public loadCoursesAfterLogin()
     {
-        // Fetch request
+        this.http.post('/courses', {}).then(response =>
-        fetch(`${Constants.API_URL}/courses`,
-            {method: 'POST', body: JSON.stringify({token: this.token})})
-        .then(res =>
         {
-            // Get response body text
+            // Check success
-            res.text().then(text =>
+            if (response.success)
             {
-                // Parse response
+                // Save courses
-                let response = JSON.parse(text);
+                this.courses = response.data;
 
-                // Check success
+                // Load assignments
-                if (response.success)
+                this.loadAssignments();
-                {
+            }
-                    // Save courses
+            else
-                    this.courses = response.data;
+            {
-
+                // Show error message TODO: Show it properly
-                    // Load assignments
+                alert(response.data);
-                    this.loadAssignments();
+            }
-                }
+        });
-                else
-                {
-                    // Show error message TODO: Show it properly
-                    alert(response.data);
-                }
-            })
-        })
-        .catch(alert)
     }
 
     /**