linkify the whole user badge part, not only avatar

app/assets/stylesheets/pages/commits.scss

@@ -314,6 +314,11 @@
   }
 }
 
+.gpg-badge-popover-user-link {
+  text-decoration: none;
+  color: $gl-text-color;
+}
+
 .gpg-badge-popover-avatar {
   float: left;
   margin-bottom: $gl-padding;

app/helpers/commits_helper.rb

@@ -228,9 +228,10 @@ module CommitsHelper
     end
 
     content = capture do
+      link_to user_path(signature.gpg_key.user), class: 'gpg-badge-popover-user-link' do
         concat(
           content_tag(:div, class: 'gpg-badge-popover-avatar') do
-          user_avatar(user: signature.gpg_key.user, size: 32)
+            user_avatar_without_link(user: signature.gpg_key.user, size: 32)
           end
         )
 
@@ -246,6 +247,7 @@ module CommitsHelper
           end
         )
       end
+    end
 
     commit_gpg_signature_badge_with(signature, label: 'Verified', title: title, content: content, css_classes: ['valid'])
   end