Made it so that subscreens items are generated during runtime and made the scale and positioning less messy for HUD and subscreens

Made it so that subscreens items are generated during runtime and made
the scale and positioning less messy for HUD and subscreens. Moved
several assets which were placed incorrectly.
Merge pull request #1 from CloudMax94/master

Subscreen items generated during runtime, scale & position less messy