Giraffes and koalas

Bigger update than before, with quite a few new things:

• Added new type of fence and fence gate: picket fence (gate)
• Added double gates of all normal wood-types and eucalyptus (not picket fence). These work just like a normal gate, except they're 2 blocks wide. Both sides open simultaneously and they can be hooked up to switches and placed in walls
• Added double farm fence gate. A unique double gate with its own style
• Added a wall / fence lantern which can only be placed on top of walls and fences, and is a bit smaller (and less bright) than a normal lantern
• Added awning blocks These work similar to banners and can be painted using a standard loom; cleaning off a painted pattern can be done like with banners by using a water-filled cauldron