==== Problem
When images are scrolled off screen in, they appear to be 'reloading' if they are scrolled back onto screen again.
Example of this issue (open full screen to see animated gif):
{F11181747}
**Why this is problematic:**
- It gives the wrong impression that more data is being used to fetch the image again
- Wrong impression that the app performance is slow
- Reloading images is visually jarring
**Solution**
//Dbrant's Gerrit patch comment://
Remove default fade-in animation from Fresco drawees.
This makes image loading feel snappier, especially when scrolling RecyclerView items that contain images.
This also adds an explicit opaque placeholder image which uses the correct background color based on designs, while still allowing the background of loaded images to remain white.