rose metadata: fix null first values entry
Merge pull request #1145 from benfitzpatrick/rose-metadata.values-default

rose metadata: fix null first values entry
rose edit: more specific macro messages
rose suite-run --reload: fix !CYLC_VERSION problem

Previously, the command fails with nonsense if the original `rose suite-run`
command was invoked with `!CYLC_VERSION=`.
Merge pull request #1147 from matthewrmshin/fix-ignore-cylc-version-reload

rose suite-run --reload: fix !CYLC_VERSION problem
rose edit: improve messages via feedback
Merge pull request #1146 from benfitzpatrick/rose-edit.macro-dialog-messages

rose edit: more specific macro messages