Avatar images are distorted if not square
Summary
Currently uploaded avatars are being distorted if they are not a square image.
Example:
![Screen_Shot_2016-10-19_at_10.31.41_AM](data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==)
The height should be auto so the images are not distorted. Images that are cropped to a circle should have the height constrained by the parent, rather than the actual image.