When avatars are disabled a blank space was visible on the infobox 

where the avatar should be.
The code before checked if the avatar service was enabled and would

then make a request to gravatar. Now the code will check if avatar

services are enabled and if there is an avatar set. 

If the services are disabled you will there will be no space

for an avatar. Otherwise, you will see a default avatar.

Python and JavaScript tests were passed. 
Tested inside of Firefox and Chrome in 2 scenarios

1. Enabling avatars

2. Disabling avatars