PHP 8.1 compatibility

This to workaround the bug mentioned in Combodo/iTop#600

datamodel.sv-display-mgmt.xml

@@ -274,12 +274,12 @@
 				<entry id="Class:Display/Attribute:size" _delta="define">Size</entry>
 				<entry id="Class:Display/Attribute:size+" _delta="define">Size of the display in inches</entry>
 				<entry id="Class:Display/Attribute:type_id" _delta="define">Type</entry>
-				<entry id="Class:Display/Attribute:type_id+" _delta="define"/>
+				<entry id="Class:Display/Attribute:type_id+" _delta="define"><![CDATA[]]></entry>
 				<entry id="Class:DisplayType" _delta="define">Display Type</entry>
 				<entry id="Class:DisplayType/Attribute:display_list" _delta="define">Displays</entry>
 				<entry id="Class:DisplayType/Attribute:display_list+" _delta="define">All displays of this type.</entry>
 				<entry id="Class:Model/Attribute:type/Value:Display" _delta="define">Display</entry>
-				<entry id="Class:Model/Attribute:type/Value:Display+" _delta="define"/>
+				<entry id="Class:Model/Attribute:type/Value:Display+" _delta="define"><![CDATA[]]></entry>
 			</entries>
 		</dictionary>
 		<dictionary id="NL NL">
@@ -288,12 +288,12 @@
 				<entry id="Class:Display/Attribute:size" _delta="define">Grootte</entry>
 				<entry id="Class:Display/Attribute:size+" _delta="define">Grootte van het scherm in inches</entry>
 				<entry id="Class:Display/Attribute:type_id" _delta="define">Type</entry>
-				<entry id="Class:Display/Attribute:type_id+" _delta="define"/>
+				<entry id="Class:Display/Attribute:type_id+" _delta="define"><![CDATA[]]></entry>
 				<entry id="Class:DisplayType" _delta="define">Soort Scherm</entry>
 				<entry id="Class:DisplayType/Attribute:display_list" _delta="define">Schermen</entry>
 				<entry id="Class:DisplayType/Attribute:display_list+" _delta="define">Alle schermen van dit type.</entry>
 				<entry id="Class:Model/Attribute:type/Value:Display" _delta="define">Scherm</entry>
-				<entry id="Class:Model/Attribute:type/Value:Display+" _delta="define"/>
+				<entry id="Class:Model/Attribute:type/Value:Display+" _delta="define"><![CDATA[]]></entry>
 			</entries>
 		</dictionary>
 		<dictionary id="PT BR">
@@ -302,12 +302,12 @@
 				<entry id="Class:Display/Attribute:size" _delta="define">Tamanho</entry>
 				<entry id="Class:Display/Attribute:size+" _delta="define">Tamanho do monitor em polegadas</entry>
 				<entry id="Class:Display/Attribute:type_id" _delta="define">Tipo</entry>
-				<entry id="Class:Display/Attribute:type_id+" _delta="define"/>
+				<entry id="Class:Display/Attribute:type_id+" _delta="define"><![CDATA[]]></entry>
 				<entry id="Class:DisplayType" _delta="define">Tipo de monitor</entry>
 				<entry id="Class:DisplayType/Attribute:display_list" _delta="define">Monitores</entry>
 				<entry id="Class:DisplayType/Attribute:display_list+" _delta="define">Todos monitores deste tipo.</entry>
 				<entry id="Class:Model/Attribute:type/Value:Display" _delta="define">Monitor</entry>
-				<entry id="Class:Model/Attribute:type/Value:Display+" _delta="define"/>
+				<entry id="Class:Model/Attribute:type/Value:Display+" _delta="define"><![CDATA[]]></entry>
 			</entries>
 		</dictionary>
 	</dictionaries>

extension.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <extension format="1.0">
     <extension_code>sv-display-mgmt</extension_code>
-    <version>1.1.0</version>
+    <version>1.1.1</version>
     <label><![CDATA[Display management]]></label>
     <description><![CDATA[Document displays of various types]]></description>
     <mandatory>false</mandatory>

module.sv-display-mgmt.php

@@ -5,7 +5,7 @@
 
 SetupWebPage::AddModule(
 	__FILE__, // Path to the current file, all other file names are relative to the directory containing this file
-	'sv-display-mgmt/1.1.0',
+	'sv-display-mgmt/1.1.1',
 	array(
 		// Identification
 		//