Only show environment fields in form when a new project is created

templates/fragments/edit_project_form.html

@@ -48,6 +48,7 @@
       </div>
     </div>
 
+      {% if new_project %}
         <div class="block-list project-list-item">
           <header class="block-list__header block-list__header--grow">
             <h2 class="block-list__title">Project Environments</h2>
@@ -73,6 +74,7 @@
             <button v-on:click="addEnvironment" class="icon-link" tabindex="0" type="button">Add another environment</button>
           </div>
         </div>
+      {% endif %}
 
       <div class="action-group">
         <button class="usa-button usa-button-primary" tabindex="0" type="submit">{{ action_text }} Project</button>