Made all JS preprocessing take place in one file.

- Deleted ./machine.js, ./move.js, and ./pokemon.js.

+Added a new script for these jobs: ./prepdata.js.
  * This is a node script, and as such Rhino is no longer necessary.
  * This new script writes to the files directly, the old Rhino ones
    printed to stdout and piped the output making for cleaner syntax.

* Edited ./build.sh with the new script.
Aligned the matchup tables to the cell top.
Fixed the matchups for the Ground type.