Revert "Merge PHLAK:hotfix/gravatar-trim-strtolower into master"

This reverts commit e702a42b8e0d745d79531f1340807bd9d9ea65e5, reversing
changes made to 0a747680a366e2b77030e26bf62c6840906f8323.

I mistakingly fetched #4967 instead of #4976.