membershipworks: Adjust invoice PDF spacing

membershipworks/static/membershipworks/css/event_invoice_pdf.css

@@ -1,6 +1,6 @@
 @page {
   size: letter portrait;
-  margin: 1.2in 0.7in;
+  margin: 1.5in 0.7in 1.2in;
 
   @top-center {
     content: "Event Invoice";
@@ -57,7 +57,7 @@ header {
 }
 
 body {
-  margin-top: 1em;
+  margin-top: 3em;
 }
 
 p {

membershipworks/templates/membershipworks/event_invoice.dj.html

@@ -36,14 +36,14 @@
     </p>
     <p>
       <b>Materials Fee <span class="font-monospace fw-light">[m]</span>:</b>
-      {% if event.materials_fee_included_in_price is None %}
+      {% if event.materials_fee_included_in_price or event.materials_fee == 0 %}
-        Unknown if included in price
-      {% elif event.materials_fee_included_in_price %}
         {% if event.materials_fee is not None %}
           ${{ event.materials_fee|floatformat:2 }}
         {% else %}
           Not defined
         {% endif %}
+      {% elif event.materials_fee_included_in_price is None %}
+        Unknown if included in price
       {% else %}
         Not collected by CMS
       {% endif %}