import_html 7.x-1.x-dev

So the D7 branch is doing most of the things it is supposed to now.
The UI and folder browser works as before, importing pages now supports
* path
* title
* body
* text fields (in general)
* even menus again.
* Url rewrites and file storage also works as before (though url relinking may be refactored at a later date)

Processing either in single pass of batch job seems to work.
The debug results screen works again - turn on debug and see it under the 'results' tab.

CHANGES from D6 include:
* debug flag is moved from per-preset configs to a global flag (no big chenge)
* the UI for settings is moved around a lot, but most previous items are there - they just may have shifted on the page.
* A large rewrite for scraping logic was made to support D7 fields
* There is the beginnings of a UI-based element mapper - we should soon be able to abandon the XSL templates entirely as logic that they used to perform is now easier to control via the settings, specifically:
* you can select elements (via xpath) to be discarded from the input (an add-on called preprocess-cleanups)
* The 'content tag ID' selector is still supported, but will be phased out as the node 'body' field is no longer such a special case, it's just another 'textarea'
* Preliminary support for direct RDF-based data field mappings, though that needs work to explain.
* Behavior of htmltidy PHP extension changed again in some versions of PHP, and the API is unreliable. Added a switch (admin/structure/import_html/setup) to let you choose to use the stable commandline version even if there is a php extension available. (previously it would use the php extension by choice if available

CURRENTLY NOT WORKING
* the 'demo' page
* additional field types like date and file attachment. Seldom used anyway, but can be tested sometime soon
* some 'meta' fields - there was an add-on for nodewords that would pull page 'meta' into Drupal. that data is still being captured - but is not currently retained anywhere yet.
* taxonomy - need to revisit