allow extra config to be loaded from text for testing
support importing from CSV files
allow fetching products by linkAlias
implement (and basically test) update_only for import specs
document hide_from_list and storage in the file properties help
the XLS parser now identifies it can't parse XLS
support importing article files as we do products
don't abort an article import just because one file failed
fix an old bug: disallow duplicate linkAlias or product_code
handle cached image list when removing images
use common code to update modification details for an article
document sources work with file handles too
fix the CSV source to accept input from a file handle

This fixes it for use from the web UI
use the same default expire date for API created articles as the editor
pass a real file handle through to the importer rather than the CGI bleh
make error_img handle non reference $error gracefully
set lastModifiedBy and createdBy sanely for imported articles

at least for the web UI
actually initialize the importer actor property
make the importer web UI supply an actor to the importer object
display basic metadata for articles