Use shift+click instead of alt+click to bypass boost dialog (#1638)

app/assets/javascripts/components/containers/status_container.jsx

@@ -47,7 +47,7 @@ const mapDispatchToProps = (dispatch) => ({
     if (status.get('reblogged')) {
       dispatch(unreblog(status));
     } else {
-      if (e.altKey || !this.boostModal) {
+      if (e.shiftKey || !this.boostModal) {
         this.onModalReblog(status);
       } else {
         dispatch(openModal('BOOST', { status, onReblog: this.onModalReblog }));