Inventory select works! (+other things)

Blocks can be selected from inventory
52x52 rectangle for highlighted block
Glass and plants are ignored by lighting
Glass's face is now checked in renderer
Fixed TNT rendering
Fixed Bookshelf rendering
Fixed Double Slab rendering
Moved netcat client listen to another function
Added enum for netcat screen
Added WTF TODO to "Registering blocks"
Screenshots can be aborted
Temporarly moved player starting X/Z