'Small' Updates to a bunch of classes.

Changes:
- Added Transparency 'Background' to the Image-display.
- Added 'Effects'-Menu to the Toolbar, and moved all Image-Effect's into it.
- Added 'Grid-Maker' Effect to the 'Effects'-Menu.
- Added a lot of comments troughout the code, just to make some things mroe clear. Comments are important!
- Bug-Fixes whereever possible!