chg: [UI] updated the generic element index fields

- json should accept single values without embedding them in a list
- generic field should automatically cast a list to a comma separated string

app/View/Elements/genericElements/IndexTable/Fields/generic_field.ctp

@@ -1,3 +1,11 @@
 <?php
-    echo h(Hash::extract($row, $field['data_path'])[0]);
+    $data = Hash::extract($row, $field['data_path']);
+    if (is_array($data)) {
+        if (count($data) > 1) {
+            $data = implode(', ', $data);
+        } else {
+            $data = $data[0];
+        }
+    }
+    echo h($data);
 ?>

app/View/Elements/genericElements/IndexTable/Fields/json.ctp

@@ -1,5 +1,9 @@
 <?php
     $data = h(Hash::extract($row, $field['data_path']));
+    // I feed dirty for this...
+    if (is_array($data) && count($data) === 1 && isset($data[0])) {
+        $data = $data[0];
+    }
     echo sprintf(
         '<div class="json_container_%s"></div>',
         h($k)