- Changed prefabs
 - Added rails
Merge remote-tracking branch 'origin/develop_wouter'

Conflicts:
	PinballPlanet/Assets/Scenes/Mine/Prefabs/MineCart_Parent.prefab
 - Updated .hgignore file to exclude .pidb and .pidb.meta files.
 - Made bumper chain score less specific and reusable.
 - Added new model to crystal shard.
 - Added score to trees, cart and crystal shards.
 - Changed child structure of crystal prefab.
 - Added crystal gameplay behaviour, it can be hit 3 times before it's destroyed.
 - Added crystal grow animation (not yet implemented).
 - Made TNT push animation faster.
 - Added crystal grow animation when it resets.
 - Redid mine entrance teleporter.
 - Added logs functionality.
 - Fixed a few issues with Crystal.
 - Bridge can now be destroyed (non-visual) by hitting all TNT boxes.
 - Cart will crash and drop crystals when going on destroyed bridge.
 - Added mine cart crash animation.
 - Fixed height being too low in crystal jump animation.
 - Forgot to undo changes for testing purposes.