Pieces can now be moved down a square without crashing
Removing outdated/unused conf.lua stuff
Redid a bunch of scoring stuff, and fixed clear detection against duplicates.

Fixes #1. Done by checking blocks behind the current test.
If they're the same, skips checking and moves on.
Idea being that if we have something like this:

1 1 1 1 ...

...if we're on the second 1 and the one behind it is also a 1,
we would've caught it already.