feat: add support for displaying square avatars

Simplify generated avatar resources and commit.

See #1509

layouts/partials/page_author.html

@@ -32,7 +32,7 @@
     {{ if and site.Params.avatar.gravatar .Params.email }}
       <img class="avatar mr-3 {{if eq $avatar_shape "square"}}avatar-square{{else}}avatar-circle{{end}}" src="https://s.gravatar.com/avatar/{{ md5 .Params.email }}?s=200')" alt="Avatar">
     {{ else if $avatar }}
-      {{ $avatar_image := $avatar.Fill "200x200 Center" }}
+      {{ $avatar_image := $avatar.Fill "270x270 Center" }}
       <img class="avatar mr-3 {{if eq $avatar_shape "square"}}avatar-square{{else}}avatar-circle{{end}}" src="{{ $avatar_image.RelPermalink }}" alt="Avatar">
     {{ end }}
 

layouts/partials/widgets/people.html

@@ -41,7 +41,7 @@
     {{ if site.Params.avatar.gravatar }}
       {{ $src = printf "https://s.gravatar.com/avatar/%s?s=150" (md5 .Params.email) }}
     {{ else if $avatar }}
-      {{ $avatar_image := $avatar.Fill "150x150 Center" }}
+      {{ $avatar_image := $avatar.Fill "270x270 Center" }}
       {{ $src = $avatar_image.RelPermalink }}
     {{ end }}
     {{ if $src }}