created a new class CameraPictureCallback for saving pictures
an instance of CameraPictureCallback is created when evoking CameraActivity
added permission to read an write from external storage, and updated the developing log
removed read-permission as write-permission implies the former
created an directory and albumname called TensionCamApp
moving PictureCallback-code to CameraActivity
Not working properly, No preview is showing due to an Error 100, need to release the camera
added code for surfaceChanged in CameraPreview, still not working
Stopping Preview in pause() method
added code for saving pictures, again
merging camera work