Second pass at adding key files

site/articles/_widget_external.html

@@ -0,0 +1,9 @@
+<%~set external_links_loop = Plugins::UI::fetch_widget_external_links($ID)%>
+<div class="list">
+  <%~loop external_links_loop%>
+  <div class="link">
+    <div><span><%row_num%></span></div><a href="<%URL%>"><%Title%></a>
+    <%if Abstract%><p><%Abstract%></p><%endif%>
+  </div>
+  <%~endloop%>
+</div>