Updated landmarkEvaluation-app and some CMake scripts
Minor changes in SDM stuff
Minor changes to SDM and its cmake scripts

- Renamed sdmLandmarkDetectionPlain to sdmSimpleLandmarkDetection
- Updated most of the SDM CMake scripts
SDM: Just added a comment
Replaced function call with local variable in SimpleLandmarkSink
Commented some stuff in the LandmarkSinks
Added a SimpleModelLandmarkSink
Renamed SimpleLandmarkSource to SingleLandmarkSource (non-compiling code atm)
Renamed SimpleLandmarkSource to SingleLandmarkSource: Renamed the files & cmake (compiling again)
Renamed SimpleLandmarkSink to SingleLandmarkSink (non-compiling)
Renamed SimpleLandmarkSink to SingleLandmarkSink: Renamed the files & cmake (compiling again)