* makor refactoring of QR-related code (redundancy removal)
* makor refactoring of QR-related code (redundancy removal)

dagophil/vigra,stuarteberg/vigra,cbecker/vigra,cbecker/vigra,kod3r/vigra,mmuellner/vigra,DaveRichmond-/vigra,timoMa/vigra,psteinb/vigra,capturePointer/vigra,mmuellner/vigra,martinsch/vigra,cbecker/vigra,funkey/vigra,capturePointer/vigra,timoMa/vigra,timoMa/vigra,cha007/vigra,dstoe/vigra,martinsch/vigra,hmeine/vigra,mmuellner/vigra,capturePointer/vigra,cha007/vigra,dstoe/vigra,martinsch/vigra,xiwei-zhang/vigra,stuarteberg/vigra,ThomasWalter/vigra,cbecker/vigra,dagophil/vigra,dagophil/vigra,DaveRichmond-/vigra,DaveRichmond-/vigra,psteinb/vigra,mmuellner/vigra,ThomasWalter/vigra,xiwei-zhang/vigra,mmuellner/vigra,timoMa/vigra,capturePointer/vigra,funkey/vigra,dstoe/vigra,cbecker/vigra,capturePointer/vigra,DaveRichmond-/vigra,capturePointer/vigra,ThomasWalter/vigra,ThomasWalter/vigra,ThomasWalter/vigra,timoMa/vigra,DaveRichmond-/vigra,hmeine/vigra,psteinb/vigra,dagophil/vigra,kod3r/vigra,kod3r/vigra,martinsch/vigra,DaveRichmond-/vigra,stuarteberg/vigra,timoMa/vigra,stuarteberg/vigra,martinsch/vigra,xiwei-zhang/vigra,stuarteberg/vigra,dstoe/vigra,psteinb/vigra,mmuellner/vigra,dstoe/vigra,kod3r/vigra,xiwei-zhang/vigra,kod3r/vigra,ThomasWalter/vigra,cha007/vigra,DaveRichmond-/vigra,cha007/vigra,xiwei-zhang/vigra,cha007/vigra,hmeine/vigra,xiwei-zhang/vigra,hmeine/vigra,mmuellner/vigra,dstoe/vigra,dagophil/vigra,hmeine/vigra,hmeine/vigra,cbecker/vigra,funkey/vigra,cha007/vigra,timoMa/vigra,kod3r/vigra,stuarteberg/vigra,funkey/vigra,psteinb/vigra,ThomasWalter/vigra,dstoe/vigra,capturePointer/vigra,martinsch/vigra,funkey/vigra,psteinb/vigra,dagophil/vigra,funkey/vigra,hmeine/vigra,xiwei-zhang/vigra,psteinb/vigra,stuarteberg/vigra,kod3r/vigra,funkey/vigra,dagophil/vigra,cha007/vigra