* Revert "Fix some icon names changed by the Font Awesome 5. (#8796)"
This reverts commit 3f9ec3de82.
* Revert "Migrate to font-awesome 5.0. (#8799)"
This reverts commit 8bae14591b.
* Revert "Fix some icons names, unavailable in fontawesome5 (free license). (#8792)"
This reverts commit b9c727a945.
* Revert "Update the icon name changed by the Font Awesome 5. (#8776)"
This reverts commit 17af4d27da.
* Revert "Add bot icon to bot avatars and migrate to newer version of Font Awesome (#8484)"
This reverts commit 4b794e134d.
Eugen Rochko
Naoki Kosaka
Maciek Baron
Yamagishi Kazutoshi