[TASK] Move all content elements to one group again

In TCA, the calendarize elements were split up into 3 to 4 groups
in calendarize version v15 and were thus displayed in different
tabs in the "New content element wizard".

We now revert to the old style with only one tab. This can still
be configured differently with TCA or TSconfig if deemed necessary.

Resolves: #871

Author: sypets

Configuration/TCA/Overrides/tt_content.php

@@ -6,27 +6,22 @@
 
 $ll = 'LLL:EXT:calendarize/Resources/Private/Language/locallang.xlf:';
 
-foreach (['normal', 'special', 'booking'] as $itemGroup) {
-    TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addTcaSelectItemGroup(
-        'tt_content',
-        'CType',
-        'calendarize_' . $itemGroup,
-        $ll . 'mode.' . $itemGroup,
-    );
-}
-
-$pluginNameAndGroup = array_merge(
-    array_fill_keys(
-        ['ListDetail', 'List', 'Detail', 'Search', 'Result', 'Latest', 'Single'],
-        'calendarize_normal',
-    ),
-    array_fill_keys(
-        ['Year', 'Quarter', 'Month', 'Week', 'Day', 'Past'],
-        'calendarize_special',
-    ),
-    ['Booking' => 'calendarize_booking'],
+TYPO3\CMS\Core\Utility\ExtensionManagementUtility::addTcaSelectItemGroup(
+    'tt_content',
+    'CType',
+    'calendarize',
+    'Calendarize',
 );
 
+$pluginNameAndGroup = array_fill_keys(
+        [
+            'ListDetail', 'List', 'Detail', 'Search', 'Result', 'Latest', 'Single',
+            'Year', 'Quarter', 'Month', 'Week', 'Day', 'Past',
+            'Booking',
+        ],
+        'calendarize',
+    );
+
 foreach ($pluginNameAndGroup as $pluginName => $group) {
     $pluginNameLowercase = strtolower($pluginName);
     $pluginSignature = TYPO3\CMS\Extbase\Utility\ExtensionUtility::registerPlugin(