Shows filtered images in geometry modules and comparison.

bug:7279469
bug:7379286
bug:7344214
bug:7379140

Also:
- cache multiple version (with/without geometry or filters applied)
- doesn't show the original image anymore when waiting for a filtered version (shows nothing instead for now)
- fix potential crash in Curves

Change-Id: I4eabd42c30f6d370571f177d5efe92550798aed8