Revert "Deleting useless Classes"

This reverts commit 2abab4d7a1f8be812f590b3726ce1a656afa1830.
Carefully deleted unused (old) classes

- cleared programm from unused/old classes
- this commit lacks the newly added stuff from commit 822c4b1
some stuff
deleted unused Options "Dialog-changed"
added showCross

Hilfslinien können ausgeblendet werden
runs but it's not super
Final changes for a stable version

Putting this in a new Branch "stable"
Deleting a prinln()
putting stable in here