Run slightly less afoul of accessibility checks. #294.

This makes the clickable element an interactive element, but doesn't add
alt text and makes it not-obvious that you can click the elefriend.  On
one hand, this goes against good practice; on the other hand, it's not
*supposed* to be obvious that you can click the elefriend.

app/javascript/flavours/glitch/styles/components/drawer.scss

@@ -65,6 +65,8 @@
 
     .mastodon {
       flex: 1;
+      border: none;
+      cursor: inherit;
     }
   }