Texture doesn't need to be re-loaded/retrieved every time we need to look at it, can keep a reference.
Hud has button to go to crafting screen, it goes to the new blank screen.
Changed HUD's color to be more sensical, looks better. Changed Crafting's color to be better.
Crafting gets inventory stage and its new, blank crafting stage.
Merge branch 'crafting-screen' of https://github.com/icbat/Tradesong into reworkScreenLogic
This works like I expect it to.
Merge pull request #134 from icbat/reworkScreenLogic

Rework screen logic