Replace CSS-driven borders with bootstrap borders

This makes future refactoring easier, since the elements will
retain their borders even if the hierarchy changes.

Also round some maps and the legale section since I think those now
look nicer.

app/views/users/terms.html.erb

@@ -30,7 +30,7 @@
     <% end %>
   </div>
 
-  <div id="contributorTerms" class="legale">
+  <div id="contributorTerms" class="legale border border-grey rounded">
     <%= render :partial => "terms" %>
   </div>