Fix landscape bug with blurred backgrounds.
Fix landscape bug with blurred backgrounds.

tokorom/JTSImageViewController,atone/JTSImageViewController,FanPortal/JTSImageViewController,ywzw2013/JTSImageViewController,jonesgithub/JTSImageViewController,IdeasOnCanvas/JTSImageViewController,mash/JTSImageViewController,iosphere/JTSImageViewController,ainopara/JTSImageViewController,larcus94/JTSImageViewController,caoer/JTSImageViewController,GeorgesAlkhouri/JTSImageViewController,Kingside/JTSImageViewController,jaredsinclair/JTSImageViewController,hoanganh6491/JTSImageViewController,Ethan-Z/JTSImageViewController,mattprowse/JTSImageViewController,colemancda/JTSImageViewController,clooth/JTSImageViewController,jogabo/JTSImageViewController,bulusoy/JTSImageViewController,ElfSundae/JTSImageViewController,lintaoSuper/JTSImageViewController,ello/JTSImageViewController