Fix gravatar size for head panel icon

app/views/layouts/_head_panel.html.haml

@@ -43,6 +43,6 @@
               %i.fa.fa-sign-out
           %li.hidden-xs
             = link_to current_user, class: "profile-pic", id: 'profile-pic' do
-              = image_tag avatar_icon(current_user.email, 26), alt: 'User activity'
+              = image_tag avatar_icon(current_user.email, 60), alt: 'User activity'
 
 = render 'shared/outdated_browser'