Adds static hash link to search tools in top menu.

- for consistency with the search tool link on home page.
- caution need to remove formerly used promote property on the wagtail search tools page to avoid 2 entries in the menu.

ref #397

micorr/templates/documents/tags/top_menu.html

@@ -22,6 +22,7 @@
                     <a href="{% pageurl menuitem %}" {% if calling_page and calling_page.url == menuitem.url %} class="current"{% endif %}>{{ menuitem.title }}</a>
                 {% endif %}
             {% endfor %}
+             <a href="{% pageurl site_root %}#search">Search tools</a>
             {% if request.user.is_authenticated %}
                 <a href="{% url 'users:detail' request.user.username %}">{% trans "My Profile" %}</a>
                 <a href="{% url 'account_logout' %}"> {% avatar request.user 35 %} {% trans "Sign Out" %}</a>