improve formatting script and handle formatting errors

templates/macros.html

@@ -1,3 +1,14 @@
+<!-- Takes the path of a page and checks if it exists
+- if exists sets the page
+-->
+{% macro get_if_exists(path, type="text") %}
+    {% set pages_str = people.pages | json_encode() | as_str %}
+    {% if pages_str is containing(person.name) %}
+    {% set page = get_page(path=page_path) %}
+    {% endif %}
+    {{ page }}
+{% endmacro get_if_exists %}
+
 {% macro page_list(type="text") %}
     <div id="list"></div>
     {% if section.extra.group_pages_by %}