- Replace various icons and add xhdpi/sw600dp-mdpi versions of them.
- When user press on the thumbnails, show a color overlay on it.
- For a wide (w/h > 2) picture, add panorama overlay on it.
- Align photo count label position when there is no icon for it.
- Adjust offline page layout.

Change-Id: I327d25806e99843bfa05d3ca0e9be5a8f9375595