taxonomy_csv 6.x-3.0

By Daniel Berthereau: Released to 6.x-3.0 :

By Daniel Berthereau: Redesigned UI with dynamic options and examples (AHAH).
By Daniel Berthereau: Added import by a text area.
By Daniel Berthereau: Added hook_perm "administer taxonomy by csv".
By Daniel Berthereau: Added memorize user settings.
By Daniel Berthereau: Added test on a duplicate of an existing vocabulary.
By Daniel Berthereau: Added tabulation delimiter option.
By Daniel Berthereau: Added import terms as flat vocabulary.
By Daniel Berthereau: Renamed "children import" to "structure import".
By Daniel Berthereau: Disabled option relations to all vocabularies (not in D6).
By Daniel Berthereau: Extracted advanced help to alone file.
By Daniel Berthereau: Simplified stats import code.
By Daniel Berthereau: Rewrited advanced help.