Javadoc, Refactorings, Bug-Fixes, and MORE!

Have another pull-request!

This time including:
- Refactored Image Import/Export classes. (Now they all got their own classes)
- Added a new fancy compressed binary image exporter (ZBIN instead of BIN).
- Added new ImageOps: RotateRightBy90°, Flip vertically, Flip Horizontally, White Noise, Simplex Noise, Simple Blur, Simple Sharpen
- Added ICONS. Lots of them! (Some are still missing though)
- Generated a nice and fancy javadoc for the entire project.
- Fixed a FATAL bug in the TGA exporter!