Include GitHub fork ribbon

Include GitHub fork ribbon on bottom right, so interested users can
browse the source.
Remove unneeded Babel files
Decrease table sizes

Decrease table sizes by removing whitespace and newlines, as both are
unnecessary according to the EDN standard.
Check for numpad keycodes

For Bopomofo and Pinyin, check that the key pressed did not come from
numpad, as the user may want to enter numbers without it being
intercepted by the IME.
Version control the compiled JavaScript file

Version control the compiled JavaScript file, so that the state of the
website is always retrievable.
Increment version