Refactor task order route to check for request args instead of request.referrer

templates/task_orders/_new.html

@@ -9,7 +9,7 @@
   {% include "fragments/flash.html" %}
 
   {% block form_action %}
-    {% if from_ko_review %}
+    {% if ko_edit %}
       <form method='POST' action="{{ url_for('task_orders.update', screen=current, task_order_id=task_order_id, next=next) }}" autocomplete="off" enctype="multipart/form-data">
     {% endif %}
 
@@ -43,7 +43,7 @@
     {% block next %}
 
       <div class='action-group'>
-        <input type='submit' class='usa-button usa-button-primary' value='{{ "Save" if from_ko_review else "Save & Continue" }}' />
+        <input type='submit' class='usa-button usa-button-primary' value='{{ "Save" if ko_edit else "Save & Continue" }}' />
       </div>
 
     {% endblock %}