Feat: Add link to shortlistings page in top-bar

app/templates/components/topbar.html

 <!--Top bar-->
 <div class="w3-top">
-    {% set theme_colour = "teal" if current_user.role == "staff" else "blue" %}
     <div class="w3-bar w3-{{ theme_colour }} w3-large">
         <div class="w3-bar-item home-link">
             <h4><strong> <a href="{{ url_for('auth.login') }}">Project Allocator</a></strong></h4>
         </div>
+        <div class="w3-bar-item">
+            <a class="w3-btn w3-button w3-hover-none w3-hover-text-white"
+               title="Shortlisted Projects"
+               href="{{ url_for(current_user.role ~ '.projects_ranking') }}">
+                Shortlisted
+            </a>
+        </div>
         <div class="w3-right">
             <div class="w3-dropdown-hover w3-bar-item w3-{{ theme_colour }}">
                 <button class="w3-btn w3-hover-{{ theme_colour }} w3-text-light-gray">