Support non-fa site icons by giving sites an actual name separate from their icon class

templates/mf2/h-card.hamlet

@@ -21,7 +21,7 @@
       $forall ((site, template), profile) <- userProfiles
         <li>
           <a .u-url itemprop="sameAs" rel="me" href="#{substitute template profile}">
-            <i .fa.fa-#{siteIcon site}>
+            <i .#{siteIcon site}>
             $maybe name <- profileDisplayName profile
               #{name}
             $nothing

templates/mf2/h-entry.hamlet

@@ -19,5 +19,5 @@
       #{timeFriendly updated}
     $forall (E.Value url, E.Value icon, E.Value name) <- posses
       <a .u-syndication href=#{url}>
-        <i .fa.fa-#{icon}>
+        <i .#{icon}>
         #{name}