Cleanup panel code (Part 1)

[kphoenix137]

Notes:

• HPPer changed from 80 to 81. The globes have 81 rows of pixels that can be filled.
• Buttons had their positions/sizes scattered around as magic numbers, and resulted in some inconsistencies, so this was resolved, which broke the time demo.
• Fixed flasks always showing an empty row of pixels even with full globes.
• Empty flasks above the panel are slightly larger than the filled flasks, resulting in strange visuals when the globe is changing fill level. I modified them to always draw the empty part entirely, and then draw the filled part, if applicable.

All of this should make it entirely easier to mod the control panel without having to play around with magic numbers in many functions.

[AJenbo]

need a rebase

[AJenbo]

good progress, eventually i hope we can have most of the sizes driven by the sprite sizes rather then hard coded values.