This commit includes revamped sprites and connected book cases, which ba...

...sically work just like counters or tables. They connect If a bookcase is to its left/right. If someone wants to code it, go right ahead.

For reference:
http://i.imgur.com/yv7bhlE.png
http://i.imgur.com/RrlKVTx.png

Bottom right is the one we have now. (default)

Signed-off-by: Pewtershmitz <xengan@gmail.com>