Bigger refactoring

- deleted FPS diag class
- renamed project folder to „SSSS“
- removed some license header placeholder
Added note that needs libGDX1.0
Added copyright
added arguments
removed line breaks
render only if texture found
renamed AbstractGameObject to AbstractEntity
made it interface
Javadoc fixed
Javadoc
javadoc
renamed method
refactoring
improved unicorn fetching
correct position of heigtmap init
set random goal
typo
don't do anything
#10 implemented