Add a toast when save failed

Signed-off-by: Sébastien MICHEL <michoux@gmail.com>
Add Toast on not implemented case

Signed-off-by: Sébastien MICHEL <michoux@gmail.com>
Fix FC when opening img not accessible on Adapter

+ clean-up old commented code

Signed-off-by: Sébastien MICHEL <michoux@gmail.com>