Quality of Life Improvements

Two significant quality of life improvements.

One was sorta a bug.

The map screen was recalculating and redrawing the entire level each frame.

Which wasn't a problem as long as the number of rooms explored for the level was relatively small.

Once it got to be significant, the keyboard became less responsive. I poll the whole keyboard state each frame and check for changes.

So I made it draw the map one time when entering the state, and that fixed it.

Other improvement has to do with the inventory screen.

It was a total mess to look through the jumble of stuff in yer inventory.

So now it is sorted and tallied by name.