Chen

[IMP] topbar: add shortcuts for opening menus

1

## Description: This PR implements the shortcuts to open topbar menus. It also implements the nagivation via keyboard in the menus. The basic idea is to use an external listener...

[FIX] xlsx: fix demo data error

1

## Description: This PR fixes the demo data error when opening demo .xlsx file for importing tests in Excel (online). The root cause is the incorrect id of shared strings....