Rm courser on fullscreen + fix flask route naming

Signed-off-by: David Brenn <davidbrenn@t-online.de>

app.py

@@ -132,7 +132,7 @@ def imageTimer():
             else:
                 return "Failed to set image timer", 500  # Return a 500 Internal Server Error response
 
-    @app.route('/rootImageFolder', methods=['POST', 'GET'])
+    @app.route('/root-image-folder', methods=['POST', 'GET'])
     def rootImageFolder():
         if request.method == 'GET':
             return config.rootFolderPath

nfcPictureFrame.py

@@ -151,6 +151,7 @@ def setupTKWindow(self):
         self.root = tk.Tk()
         self.root.title("NFC Picture Frame")
         self.root.attributes("-fullscreen", True)
+        self.root.config(cursor="none")
         self.root.bind("<Escape>", self.toggle_fullscreen)
         self.root.configure(highlightthickness=0,highlightcolor="black",borderwidth=0,background="black")
         self.screen_width = self.root.winfo_screenwidth()
@@ -347,9 +348,11 @@ def pickImage(self):
     def toggle_fullscreen(self,event):
         if(self.is_Fullscreen):
             self.root.attributes("-fullscreen", False)
+            self.root.config(cursor="")
             self.is_Fullscreen = False
         else:
             self.root.attributes("-fullscreen", True)
+            self.root.config(cursor="none")
             self.is_Fullscreen = True