typo: remove last 's' in 'Last state changes' field name in Run page

And swap the order of the fields 'Last state changes' and 'State' so
that 'State' comes first.
fix: deployments can be saved again

Blank 'New node name' was taken into account for form validation, thus
preventing the form from being sent, since the field was blank.
fix: Value field correctly hidden for node inputs mapped to an output