fix #1673: Rotation of Compass Screen
fix #1673: Rotation of Compass Screen

* set to portrait instead of allowing any orientation
tobiasge/cgeo,S-Bartfast/cgeo,samueltardieu/cgeo,cgeo/cgeo,superspindel/cgeo,cgeo/cgeo,SammysHP/cgeo,xiaoyanit/cgeo,marco-dev/c-geo-opensource,Huertix/cgeo,mucek4/cgeo,pstorch/cgeo,rsudev/c-geo-opensource,kumy/cgeo,cgeo/cgeo,marco-dev/c-geo-opensource,KublaikhanGeek/cgeo,madankb/cgeo,SammysHP/cgeo,S-Bartfast/cgeo,mucek4/cgeo,vishwakulkarni/cgeo,matej116/cgeo,S-Bartfast/cgeo,ThibaultR/cgeo,samueltardieu/cgeo,auricgoldfinger/cgeo,xiaoyanit/cgeo,samueltardieu/cgeo,ThibaultR/cgeo,schwabe/cgeo,tobiasge/cgeo,yummy222/cgeo,kumy/cgeo,schwabe/cgeo,SammysHP/cgeo,kumy/cgeo,lewurm/cgeo,auricgoldfinger/cgeo,brok85/cgeo,tobiasge/cgeo,rsudev/c-geo-opensource,cgeo/cgeo,brok85/cgeo,lewurm/cgeo,matej116/cgeo,Bananeweizen/cgeo,Bananeweizen/cgeo,superspindel/cgeo,schwabe/cgeo,brok85/cgeo,auricgoldfinger/cgeo,superspindel/cgeo,matej116/cgeo,Huertix/cgeo,Bananeweizen/cgeo,ThibaultR/cgeo,mucek4/cgeo,vishwakulkarni/cgeo,KublaikhanGeek/cgeo,Huertix/cgeo,lewurm/cgeo,yummy222/cgeo,marco-dev/c-geo-opensource,vishwakulkarni/cgeo,pstorch/cgeo,madankb/cgeo,pstorch/cgeo,schwabe/cgeo,xiaoyanit/cgeo,KublaikhanGeek/cgeo,rsudev/c-geo-opensource,madankb/cgeo,yummy222/cgeo