Rename File > Quit to File > Exit on Windows.
Merge remote-tracking branch 'origin' into rlim/rename-quit-to-exit
Use "Exit" only for Windows.
Merge pull request #2730 from adobe/rlim/rename-quit-to-exit

Rename quit to exit on Windows.
Add command ID for separator.
Merge pull request #2776 from adobe/glenn/issue-2770

Update native menu unit tests to pass command ID for separator