minor refactoring
minor refactoring

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