fuze+/keymaps: Add action_std_cancel to bookmark and recording screen

This fix FS#12902 and prevent same bug in bookmark screen.
thanks to Julian67 for reporting

Change-Id: Ifd2a383fd0f24aa3e242a8c72668de85526f0a70
Reviewed-on: http://gerrit.rockbox.org/622
Reviewed-by: Amaury Pouly <amaury.pouly@gmail.com>