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

This reverts commit c21cd36915a461afba89929006b525f2e755cdd4, reversing
changes made to 3138073650e092a9927a74cee903f371835a7ec9.

I mistakingly fetched #4967 instead of #4976.