Fix the issues with multiple framelines - For multiple framelines, user move mouse from one frameline to another, the frame is not showed correctly. - Old implementation always draw normal frame on the frameline where mouse just leaving. - It is fixed by detecting leave-notify event and removing hover mark. - When user active a frame on a frameline that is not what old active frame is at, the old active frame is not deactivated. - It is fixed by calling frameline.deactive() of a frameline when a frame is activated on another frameline.

Scene 1: Main category

1. Start to load all pictures and save them in the file system.
2. Load the main screen and move all pictures to the correct positions.
3. Show the cursor and do animation to scale it.
4. After the animation, start to listent to keys and move the cursor.
5. If the key is enter, load the next scene.


Scene 2: