[BUGFIX] Make EXT:form wizard work again

Due to the general removal of prototype
the EXT:form wizard does not work
anymore. For now, load prototype
in the wizard again.

The JS for EXT:form needs to be
re-written for 7 LTS of course to remove
the dependency on prototypejs.

Resolves: #63424
Releases: master
Change-Id: Ia2b6bba19e62f3036b3cbba5676ccfce7ed5c0ae
Reviewed-on: http://review.typo3.org/34762


Reviewed-by: Tymoteusz Motylewski <t.motylewski@gmail.com>
Tested-by: Tymoteusz Motylewski <t.motylewski@gmail.com>
Reviewed-by: Wouter Wolters <typo3@wouterwolters.nl>
Tested-by: Wouter Wolters <typo3@wouterwolters.nl>

typo3/sysext/form/Classes/View/Wizard/WizardView.php

@@ -218,7 +218,8 @@ class WizardView extends \TYPO3\CMS\Form\View\Wizard\AbstractWizardView {
 			'Viewport/Left/Form/PostProcessors/Mail.js',
 			'Viewport/Left/Form/PostProcessors/Redirect.js'
 		);
-		// Load ExtJS
+		// Load ExtJS and prototype
+		$this->pageRenderer->loadPrototype();
 		$this->pageRenderer->loadExtJS();
 		// Load the wizards javascript
 		$baseUrl = ExtensionManagementUtility::extRelPath('form') . 'Resources/Public/JavaScript/Wizard/';