add the cols section to the modern Home layout

ot_templating/Resources/Private/Layouts/Modern/Home.html

@@ -15,6 +15,12 @@
                         <f:comment><!-- render the content --></f:comment>
                         <f:render section="Content" />
 
+                        <f:comment><!-- render the content of the leftcol section (left column) --></f:comment>
+                        <f:render section="Leftcol" />
+
+                        <f:comment><!-- render the content of the rightcol section (right column) --></f:comment>
+                        <f:render section="Rightcol" />
+
                         <f:comment><!-- Render the next events section defined in partial/NextEvents.html--></f:comment>
                         <f:render partial="Modern/NextEvents" arguments="{settings: settings}"/>
                         <f:if condition="{settings.organizationIsNetwork}==0">