feat: dashboard back link in expand mode.

client/src/containers/Dashboard/withDashboard.js

@@ -10,6 +10,7 @@ export default (mapState) => {
       editViewId: state.dashboard.topbarEditViewId,
       sidebarExpended: state.dashboard.sidebarExpended,
       preferencesPageTitle: state.dashboard.preferencesPageTitle,
+      dashboardBackLink: state.dashboard.backLink,
     };
     return mapState ? mapState(mapped, state, props) : mapped;
   };

client/src/containers/Dashboard/withDashboardActions.js

@@ -57,6 +57,11 @@ const mapActionsToProps = (dispatch) => ({
   recordSidebarPreviousExpand: () => dispatch({
     type: t.RECORD_SIDEBAR_PREVIOUS_EXPAND,
   }),
+
+  setDashboardBackLink: (backLink) => dispatch({
+    type: t.SET_DASHBOARD_BACK_LINK,
+    payload: { backLink }
+  })
 });
 
 export default connect(null, mapActionsToProps);