Form editor

- new/edit in forms listing goes to editor
- fixed editor dependencies (via Webpack)
- updated forms table schema
- saving/loading a form works

lib/Form/Util/Styles.php

@@ -0,0 +1,47 @@
+<?php
+namespace MailPoet\Form\Util;
+
+class Styles {
+  static function getDefaults() {
+    return <<<EOL
+/* form */
+.mailpoet_form {
+
+}
+
+/* paragraphs (label + input) */
+.mailpoet_paragraph {
+
+}
+
+/* labels */
+.mailpoet_input_label,
+.mailpoet_textarea_label,
+.mailpoet_select_label,
+.mailpoet_radio_label,
+.mailpoet_list_label,
+.mailpoet_checkbox_label,
+.mailpoet_date_label {
+  display:block;
+}
+
+/* inputs */
+.mailpoet_input,
+.mailpoet_textarea,
+.mailpoet_select,
+.mailpoet_radio,
+.mailpoet_checkbox,
+.mailpoet_date {
+  display:block;
+}
+
+.mailpoet_validate_success {
+  color:#468847;
+}
+
+.mailpoet_validate_error {
+  color:#B94A48;
+}
+EOL;
+  }
+}