[Chore] Package Export, Blanks for fields, Styling (#421)

Co-authored-by: Tim Lorsbach <tim@lorsba.ch>
Reviewed-on: enviPath/enviPy#421

templates/objects/node.html

@@ -1,4 +1,5 @@
 {% extends "framework_modern.html" %}
+{% load envipytags %}
 
 {% block content %}
 
@@ -54,6 +55,12 @@
       </div>
     </div>
 
+    {% epdb_slot_templates "epdb.objects.node.viz" as viz_templates %}
+
+    {% for tpl in viz_templates %}
+      {% include tpl %}
+    {% endfor %}
+
     <!-- Image Representation -->
     <div class="collapse-arrow bg-base-200 collapse">
       <input type="checkbox" checked />