Enhancement: Paginate conversation calls in tabs (#560)

* Use conversationPage module for pagination

* Load more conversations

* Reset list if conversation status is changed

* Add specs to conversationPage

* Reset filter when page is re-mounted

* Update text

* Update text

app/javascript/dashboard/store/modules/conversations/index.js

@@ -2,9 +2,9 @@
 /* eslint no-param-reassign: 0 */
 import Vue from 'vue';
 import * as types from '../../mutation-types';
-import wootConstants from '../../../constants';
 import getters, { getSelectedChatConversation } from './getters';
 import actions from './actions';
+import wootConstants from '../../../constants';
 
 const state = {
   allConversations: [],
@@ -22,7 +22,7 @@ const state = {
     dataFetched: false,
   },
   listLoadingStatus: true,
-  chatStatusFilter: wootConstants.ASSIGNEE_TYPE_SLUG.OPEN,
+  chatStatusFilter: wootConstants.STATUS_TYPE.OPEN,
   currentInbox: null,
 };