[Bug] : Selection of scroll vs paginate should have active class on load

[caneruguz]

When loaded the active class is not in proper location, it's because this is not coded in to treebeard.

Need to make changes herE:

if (ctrl.options.paginateToggle) {
                                                return m('.btn-group.padder-10', [
                                                    m("button.btn.btn-default.btn-sm.active.tb-scroll",
                                                        { onclick : ctrl.toggleScroll },
                                                        "Scroll"),
                                                    m("button.btn.btn-default.btn-sm.tb-paginate",
                                                        { onclick : ctrl.togglePaginate },
                                                        "Paginate")
                                                ]);
                                            }