update&perf[App]: Update and infcreased performance of org.logos rend…

…ering by adding it into init in App

src/main/java/edu/group5/app/App.java

@@ -71,6 +71,9 @@ public void init() {
     UserService userService = new UserService(this.userRepository);
     DonationService donationService = new DonationService(this.donationRepository, organizationRepository);
     OrganizationService organizationService = new OrganizationService(organizationRepository);
+
+    // Pre-load logos in background so they're ready when user views causes page
+    organizationService.getTrustedOrganizationsWithLogosAsync();
 
     this.root = new BorderPane();
     this.appState = new AppState();