Bug 936353: when confirming a pick from the camera, display the EXIF preview, not the full-size image
(cherry picked from commit 21d0c957a3bd47d1c4fdeb2c7c24fd7f1d11cb7a)
Merge pull request #14730 from davidflanagan/bug936353-v1.3

Bug 936353: when confirming a pick from the camera, display the EXIF preview r=wilsonpage