fix #4570: inconsistency of pictures in image tab
fix #4570: inconsistency of pictures in image tab

tobiasge/cgeo,lewurm/cgeo,xiaoyanit/cgeo,samueltardieu/cgeo,SammysHP/cgeo,lewurm/cgeo,SammysHP/cgeo,vishwakulkarni/cgeo,brok85/cgeo,SammysHP/cgeo,ThibaultR/cgeo,schwabe/cgeo,S-Bartfast/cgeo,brok85/cgeo,tobiasge/cgeo,pstorch/cgeo,yummy222/cgeo,cgeo/cgeo,S-Bartfast/cgeo,kumy/cgeo,Huertix/cgeo,rsudev/c-geo-opensource,auricgoldfinger/cgeo,vishwakulkarni/cgeo,KublaikhanGeek/cgeo,Bananeweizen/cgeo,superspindel/cgeo,auricgoldfinger/cgeo,pstorch/cgeo,Bananeweizen/cgeo,mucek4/cgeo,marco-dev/c-geo-opensource,pstorch/cgeo,superspindel/cgeo,schwabe/cgeo,S-Bartfast/cgeo,brok85/cgeo,ThibaultR/cgeo,matej116/cgeo,madankb/cgeo,marco-dev/c-geo-opensource,xiaoyanit/cgeo,ThibaultR/cgeo,madankb/cgeo,yummy222/cgeo,Huertix/cgeo,cgeo/cgeo,Bananeweizen/cgeo,cgeo/cgeo,superspindel/cgeo,mucek4/cgeo,auricgoldfinger/cgeo,marco-dev/c-geo-opensource,samueltardieu/cgeo,xiaoyanit/cgeo,cgeo/cgeo,matej116/cgeo,matej116/cgeo,schwabe/cgeo,yummy222/cgeo,vishwakulkarni/cgeo,rsudev/c-geo-opensource,kumy/cgeo,KublaikhanGeek/cgeo,tobiasge/cgeo,rsudev/c-geo-opensource,samueltardieu/cgeo,madankb/cgeo,schwabe/cgeo,mucek4/cgeo,lewurm/cgeo,Huertix/cgeo,kumy/cgeo,KublaikhanGeek/cgeo