Merge branch 'refs/heads/Main-UI' into Connection-UI

# Conflicts:
#	src/main/java/org/to/telegramfinalproject/UI/ChatItemController.java
#	src/main/java/org/to/telegramfinalproject/UI/MainController.java

src/main/java/org/to/telegramfinalproject/UI/SidebarMenuController.java

@@ -48,7 +48,7 @@ public class SidebarMenuController {
     @FXML
     public void initialize() {
         // Load default profile image
-        Image profile = loadImage("/org/to/telegramfinalproject/Avatars/profile.png");
+        Image profile = loadImage("/org/to/telegramfinalproject/Avatars/default_profile.png");
         if (profile != null) profileImage.setImage(profile);
 
         setupButtonActions();