N°803 - Allow display & edition of attributes on n:n relations on Portal

- Remove input when object is in view mode
- Improve form errors handling
- Prevent row selection when clicking input 
- Attach date time picker to table instead of input to prevent popup truncating (popup will be visible but not aligned on the input)

sources/Form/Validator/LinkedSetValidator.php

@@ -0,0 +1,36 @@
+<?php
+
+// Copyright (C) 2010-2023 Combodo SARL
+//
+//   This file is part of iTop.
+//
+//   iTop is free software; you can redistribute it and/or modify	
+//   it under the terms of the GNU Affero General Public License as published by
+//   the Free Software Foundation, either version 3 of the License, or
+//   (at your option) any later version.
+//
+//   iTop is distributed in the hope that it will be useful,
+//   but WITHOUT ANY WARRANTY; without even the implied warranty of
+//   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//   GNU Affero General Public License for more details.
+//
+//   You should have received a copy of the GNU Affero General Public License
+//   along with iTop. If not, see <http://www.gnu.org/licenses/>
+
+namespace Combodo\iTop\Form\Validator;
+
+/**
+ * Description of LinkedSetValidator
+ *
+ * @since 3.1
+ */
+class LinkedSetValidator extends Validator
+{
+	const VALIDATOR_NAME = 'LinkedSetValidator';
+
+	/** @inheritdoc */
+	public static function GetName()
+	{
+		return static::VALIDATOR_NAME;
+	}
+}