Revert "clean cmake"

This reverts commit bf29dc87049d0dbfc81370b9ad4c4621768cc6dd.

Conflicts:
	src/CMakeLists.txt
Revert "remove old files"

This reverts commit 59b69eaf830ba7e9a20d97d3170dbea0898859ed.
Re-add Qt4. (couldnt get Qt5 to work)