QmlDesigner.propertyEditor: fix for boolean

Booleans might also be called "boolean" in the code model.

Change-Id: I700a5050234e9750df5c7cb1229b1d426e592189
Reviewed-by: Marco Bubke <marco.bubke@digia.com>

src/plugins/qmldesigner/components/propertyeditor/propertyeditor.cpp

@@ -667,7 +667,7 @@ QString templateGeneration(NodeMetaInfo type, NodeMetaInfo superType, const QmlO
                 )).arg(name).arg(properName);
                  emptyTemplate = false;
             }
-            if (typeName == "bool") {
+            if (typeName == "bool" || typeName == "boolean") {
                  qmlTemplate +=  QString(QLatin1String(
                  "QWidget {\nlayout: HorizontalLayout {\nLabel {\ntext: \"%1\"\ntoolTip: \"%1\"\n}\nCheckBox {text: backendValues.%2.value\nbackendValue: backendValues.%2\nbaseStateFlag: isBaseState\ncheckable: true\n}\n}\n}\n"
                  )).arg(name).arg(properName);