Use the correct session parameter for appsListOrder (#1292)

lemonldap-ng-portal/lib/Lemonldap/NG/Portal/Main/Display.pm

@@ -158,7 +158,7 @@ sub display {
             AUTH_USER => $req->{sessionInfo}->{ $self->conf->{portalUserAttr} },
             NEWWINDOW => $self->conf->{portalOpenLinkInNewWindow},
             LOGOUT_URL          => $self->conf->{portal} . "?logout=1",
-            APPSLIST_ORDER      => $req->{sessionInfo}->{'appsListOrder'},
+            APPSLIST_ORDER      => $req->{sessionInfo}->{'_appsListOrder'},
             PING                => $self->conf->{portalPingInterval},
             REQUIRE_OLDPASSWORD => $self->conf->{portalRequireOldPassword},
             HIDE_OLDPASSWORD    => 0,