Better sub-tree clone behaviour

[fredcooke]

BO already says "Just using plain directory " when failing to clone intermediate nodes in the tree. So, hide the clone message, embellish the just using to say "No repo for , using plain local directory" or similar.

[fredcooke]

Message on second try "Nothing " a bit too brief/meaningless, and purple text "Not a repository" could maybe be softer. Consistent/similar/matching/complementary behaviour between first and subsequent runs would be nice.

[stickycode]

@fredcooke maybe do a PR with the suggested changes in these files, then I can fix it up

ideally in these files
output/pull/lion-already-exists.txt
output/pull/lion-update.txt
output/pull/lion-is-not-a-repository.txt
output/status/clone-one-with-group-folder.txt

output/pull/lion-clone.txt