Make 'rake doc' an alias for 'rake yard', I'm more used to the former

Signed-off-by: Chris Riddoch <riddochc@gmail.com>
Documentation fix
Implemented notification.  (I think that's a better name than passivepopup)

Signed-off-by: Chris Riddoch <riddochc@gmail.com>
Implemented filepicker()

Signed-off-by: Chris Riddoch <riddochc@gmail.com>