Add wizzard-idle image.

This image is displaying a 32px * 32px standing idle wizzard, looking to the right.
Add more blocks (grass, earth, iron, stone, copper)
Add texture to wizzard-idle.png
Add even more texture to wizzard-idle.png
Add javadoc plugin to maven pom.xml
Change chunk mechanics and add first printable versions of class "World", as well as smaller improvements.

This commit includes changes to some more basic mechanics like ImageExctract and MonitorExtract, as well as a seperate ChunkCoordinate class and Entities and Players (whereas only the Player is included in the game world yet).
Merge branch 'resources' into tile-mechanics
Implement drawing

The World class is now able to draw itself. Furthermore, this commit includes:
- more documentation
- Entities now have tile IDs
- the player can move via the arrow keys (actually not completed)
- bugfixes