Refactored Break Torch to use a list of blocks to break

Allows the user to specify what blocks should be broken if below a falling block. This allows for more customization like breaking grass,redstone torches buttons and others.

Default broken blocks are FIRE, TORCH and SAPLING

NOTE: I'm not familiar with your config loading code so I didn't add a check for cases where falling blocks are also on the breakable blocks list! If you could add this check it would be great. Things can get messy if they are on the same list! Ex: dirt causing dirt to break and fall.
Sorry for not adding the check, I'm not all that great with coding yet!