Removed event bus and switched to vuex. Implemented vue dropzone.

assets/js/pages/progresseditor.vue

@@ -11,15 +11,11 @@
 </template>
 
 <script>
-import {EventBus} from "../event-bus";
 import {mapActions, mapGetters} from "vuex";
 import {TURN_ON_EDIT_MODE, TURN_OFF_EDIT_MODE} from '../store/mutation-types'
 
 export default {
   name: 'Progresseditor',
-  components: {
-    EventBus
-  },
   props: {
     totalPages: Number,
     readPages: Number,