lick="stageActive0 = !stageActive0" class="btn__check flex-grid__item" ng-class="{'btn__check--active' : stageActive0}">Incoming stage</button>
                                <button ng-click="stageActive1 = !stageActive1" class="btn__check flex-grid__item" ng-class="{'btn__check--active' : stageActive1}">Working stage</button>
                                <button ng-click="stageActive2 = !stageActive2" class="btn__check flex-grid__item" ng-class="{'btn__check--active' : stageActive2}">Revise stage</but