Optimized image size

apps/bookmarks/img/bookmarks.png

apps/calendar/img/icon.png

apps/contacts/img/contact-new.png

apps/contacts/img/person.png

apps/contacts/img/person_large.png

apps/external/img/external.png

apps/files_imageviewer/img/fancybox-y.png

apps/gallery/img/breadcrumb.png

apps/gallery/img/delete.png

apps/gallery/img/rename.png

apps/gallery/img/share.png

apps/gallery/img/supersized/back.png

apps/gallery/img/supersized/bg-black.png

apps/gallery/img/supersized/button-tray-down.png

apps/gallery/img/supersized/button-tray-up.png

apps/gallery/img/supersized/forward.png

apps/gallery/img/supersized/nav-bg.png

apps/gallery/img/supersized/nav-dot.png

apps/gallery/img/supersized/pause.png

apps/gallery/img/supersized/play.png