funktion edit should sort the connector properties in order of the 'order' property in the properties yaml

[jstrachan]

we now add the order property in the generated connectors. e.g. https://github.com/funktionio/funktion-connectors/blob/master/connectors/connector-twitter/src/main/fabric8/twitter-cm.yml#L59

so when we ask users to edit the properties we should iterate through them in the correct order to give a nice predictable order (rather than hash order ;)