Devlog 15

1. I added the About app (that I started last devlog). You can click the buttons that show info about that app.
2. I added app background color changing to settings and also changed the Reset wallpaper button to instead a Reset to defaults button.
3. I made the radio animation in KuuppaMusic smaller and it now scales better. I also fixed bugs with the taskbar music playing thing.
4. Clock and HackCMD are now properly centered.
5. Camera now records in 4K or the closest resolution instead of 720p.
6. I also added a custom scrollbar so it fits the green theme.
7. I also updated some terminal commands and fixed some bugs.