Use current usage output in CLI importer arguments
Additional importer-cli configuration notes
Give more details in importer.config notes
Remove unnecessary CLI usage comments
Correct typo + use :file: ReST role
Use suggested wording + some reformating
Harmonize CLI arguments (suppress '=' operators)
Harmonize CLI arguments (right-align options text)
Correct spelling ('overridden')
Merge pull request #413 from zeb/rebased/develop/doc-patch-importer-cli-dev-4-4

Rebased/develop/doc patch importer cli dev 4 4