position gpg badge first on commit line

app/views/projects/commit/_commit_box.html.haml

 .page-content-header
   .header-main-content
+    = render partial: 'signature', object: @commit.signature
     %strong
       #{ s_('CommitBoxTitle|Commit') }
       %span.commit-sha= @commit.short_id
     = clipboard_button(text: @commit.id, title: _("Copy commit SHA to clipboard"))
     %span.hidden-xs authored
     #{time_ago_with_tooltip(@commit.authored_date)}
-    = render partial: 'signature', object: @commit.signature
     %span= s_('ByAuthor|by')
     = author_avatar(@commit, size: 24)
     %strong