Add missing full stops
Format file/directory names as literals
Americanize spelling (utilise vs utilize)
Sync DropBox and CLI import arguments
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
Format filenames using the :file: syntax
Harmonize CLI arguments (suppress '=' operators)
Harmonize CLI arguments (right-align options text)
Correct spelling ('overridden')
Merge pull request #411 from zeb/doc-patch-importer-cli-dev-4-4

Doc patch importer cli dev 4 4
Merge pull request #409 from zeb/doc-patch-dropbox-dev-4-4

Doc patch dropbox dev 4 4