Description:

When adding custom emojis of varying widths/heights the image is cropped in the message pain as well as selection.

Server Setup Information:

• Version of Rocket.Chat Server: 0.60.4
• Operating System: Windows 10
• Deployment Method(snap/docker/tar/etc): docker
• Number of Running Instances: 1
• DB Replicaset Oplog:
• Node Version:

Steps to Reproduce:

1. Add Custom Emoji. - I.E. try with this image: https://www.google.com/search?q=meme&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjVzuaG69zWAhXk4IMKHTg5DRsQ_AUICigB&biw=1050&bih=643#imgrc=j_PXxZSMSZSELM:
2. Try to use in chat.
3. Notice top and bottom are cropped.

Expected behavior:

The image should be scaled but should maintain aspect ratio. The entire image should be seen.

Actual behavior:

The image is cropped.