screenshot: Scale and unscale the area for HiDpi displays

https://bugzilla.gnome.org/show_bug.cgi?id=731738
Updated Turkish translation
IconGrid: Don't check twice for min icon size
viewSelector: use afirmative booleans
appDisplay: Use less time to fade in icons than close popup
appDisplay: Animate folder view items
viewSelector: Allow different animation types
appDisplay: Animate AllView and FrequentView
viewSelector: Only animate with swarm on special cases
appDisplay: Animate indicators out
appDisplay: reset page to 0 when animating out
perf: Show apps perf