Make running costs editable in plugin config

public/typo3conf/ext/ep_products/Classes/Controller/GroupsPriceController.php

@@ -41,6 +41,7 @@ class GroupsPriceController extends ActionController
         });
 
         $this->view->assign('hotel', $hotel);
+        $this->view->assign('runningCosts', $this->settings['runningCosts']);
         $this->view->assign('configs', json_encode(array_values($configs), JSON_HEX_APOS));
         $this->view->assign('boards', json_encode($hotel->getGroupsPriceBoards()->toArray(), JSON_HEX_APOS));
         $this->view->assign('options', json_encode($hotel->getGroupsPriceOptions()->toArray(), JSON_HEX_APOS));

public/typo3conf/ext/ep_products/Configuration/FlexForms/flexform_groups_price_calculator.xml

@@ -0,0 +1,28 @@
+<T3DataStructure>
+	<meta>
+		<langDisable>1</langDisable>
+	</meta>
+	<sheets>
+		<sDEF>
+			<ROOT>
+				<TCEforms>
+					<sheetTitle>Konfiguration</sheetTitle>
+				</TCEforms>
+				<type>array</type>
+				<el>
+					<settings.runningCosts>
+						<TCEforms>
+							<exclude>0</exclude>
+							<label>Strom- und Entsorgungspauschale</label>
+							<config>
+								<type>input</type>
+								<default>1.7</default>
+								<eval>double2,required</eval>
+							</config>
+						</TCEforms>
+					</settings.runningCosts>
+				</el>
+			</ROOT>
+		</sDEF>
+	</sheets>
+</T3DataStructure>

public/typo3conf/ext/ep_products/Configuration/TCA/Overrides/tt_content.php

@@ -262,4 +262,10 @@ call_user_func(function () {
         'FILE:EXT:ep_products/Configuration/FlexForms/flexform_teammembers.xml'
     );
 
+    $GLOBALS['TCA']['tt_content']['types']['list']['subtypes_addlist']['epproducts_hotel_groups_price'] = 'pi_flexform';
+    \TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addPiFlexFormValue(
+        'epproducts_hotel_groups_price',
+        'FILE:EXT:ep_products/Configuration/FlexForms/flexform_groups_price_calculator.xml'
+    );
+
 });

public/typo3conf/ext/ep_theme/Resources/Private/Templates/GroupsPrice/Index.html

@@ -13,6 +13,7 @@
                 configs-json='{configs}'
                 boards-json='{boards}'
                 options-json='{options}'
+                running-costs-factor="{runningCosts}"
                 endpoint="{ep:uri.ajax(action: 'processForm', controller: 'AjaxGroupsPrice', pageUid: settings.defaultAjaxUid, arguments: '{hotel: hotel}')}"
                 loader-uri="{f:uri.image(src: 'EXT:ep_theme/Resources/Public/images/ajax-loader-white.gif')}"
             >