[15.0][FWD] connector_importer: misc fix/imp

[simahawk]

Commits from #109.
See atomic commits for details.

[simahawk]

/ocabot merge minor

[OCA-git-bot]

Hey, thanks for contributing! Proceeding to merge this for you.
Prepared branch 15.0-ocabot-merge-pr-111-by-simahawk-bump-minor, awaiting test results.

[OCA-git-bot]

@simahawk The merge process could not be finalized, because command git push origin 15.0-ocabot-merge-pr-111-by-simahawk-bump-minor:15.0 failed with output:

To https://github.com/OCA/connector-interfaces
 ! [rejected]        15.0-ocabot-merge-pr-111-by-simahawk-bump-minor -> 15.0 (fetch first)
error: failed to push some refs to 'https://***@github.com/OCA/connector-interfaces'
hint: Updates were rejected because the remote contains work that you do
hint: not have locally. This is usually caused by another repository pushing
hint: to the same ref. You may want to first integrate the remote changes
hint: (e.g., 'git pull ...') before pushing again.
hint: See the 'Note about fast-forwards' in 'git push --help' for details.

[OCA-git-bot]

Congratulations, your PR was merged at 21ac2ee. Thanks a lot for contributing to OCA. ❤️