Made sure the "Visit on site" link for tabular inlines always opens i…

…ts target within a new browser tab or window (thus being not only consistent with similar links elsewhere but also making sure that no pending changes get lost when the user clicks it)

grappelli/templates/admin/edit_inline/tabular.html

@@ -58,7 +58,7 @@ <h3 style="display: none;"><b>{{ inline_admin_formset.opts.verbose_name|title }}
                     <div class="td tools">
                         {% spaceless %}
                         <ul class="tools">
-                            {% if inline_admin_form.show_url %}<li class="viewsite-link-container"><a href="../../../r/{{ inline_admin_form.original_content_type_id }}/{{ inline_admin_form.original.id }}/" class="icon viewsite-link" title="{% trans 'View on Site' %}"> </a></li>{% endif %}
+                            {% if inline_admin_form.show_url %}<li class="viewsite-link-container"><a href="../../../r/{{ inline_admin_form.original_content_type_id }}/{{ inline_admin_form.original.id }}/" class="icon viewsite-link" title="{% trans 'View on Site' %}" target="_blank"> </a></li>{% endif %}
                             {% if inline_admin_formset.opts.sortable_field_name %}
                                 <li class="drag-handler-container"><a href="javascript://" class="icon drag-handler" title="{% trans 'Move Item' %}"></a></li>
                             {% endif %}