Restructure CoreEnroller for top-level form generation (CFM-218) (#357)

* Restructure CoreEnroller for top-level form generation (CFM-218)

* Ensure "collect enrollee email" renders (CFM-495)

app/templates/EnrollmentFlows/start.inc

@@ -38,14 +38,11 @@ $modelTable = $this->Tab->getModelTableReference($modelsName);
 // For now, we just request the enrollee email. We're only called if
 // collect_enrollee_email is true, so we don't need to check it, though
 // if we ever add more fields to the start form we should.
-print $this->element('form/listItem', [
-  'arguments' => [
-    'fieldName' => 'enrollee_email',
-    'fieldOptions' => [
-      'required' => true
-    ],
+$fields = [
+  'enrollee_email' => [
+    'required' => true,
     'fieldType' => 'string'
   ]
-]);
+];
 
 // Any hidden fields??

app/templates/EnrollmentFlows/start.php

@@ -27,6 +27,10 @@
 
 declare(strict_types = 1);
 
+// Enrollment Flow Start has its own file of fields
+$modelsName = $this->getName();
+$templatePath = $vv_template_path ?? ROOT . DS . "templates" . DS . $modelsName;
+include($templatePath . DS . 'start.inc');
 ?>
 
 <div class="page-title-container">
@@ -38,8 +42,6 @@
 <?= $this->element('flash') // Flash messages ?>
 
 <?php
-// Enrollment Flow Start has its own file of fields
-$this->set('vv_fields_inc', 'start.inc');
 // Set form edit ability
 $this->set('vv_is_editable', true);
 
@@ -49,7 +51,7 @@
   'type' => 'post',
 ]);
 // Form body
-print $this->element('form/unorderedList');
+print $this->element('form/unorderedList', ['vv_fields' => $fields]);
 // Close the Form
 print $this->Form->end();