csv2web: Add document name as header.
cvs2web: Remove bullet points when FontAwesome is used.
abbyy2csv: Use logging module.
Allow overriding CSV writer.
Add GUI viewer for OCR and cluster-ification.
Make Qt processor able to process all files.
Add ODbL license.
Fix saving of page and bounds.
Fix some minor issues with Qt saving.

* Trim empty ending cells.
* Reset processor pages and lines when changing parameters.
* Disable file operation toolbar when processing, too.
Reduce minimum samples for DBSCAN.
Save leftover text objects at end of page.
Sort objects on page, so leftovers appear grouped.
Regen CSVs.
Add PDF previewer.
Pass around TextObject's instead of plain text.
Highlight individual selected cells.
Add some more keyboard shortcuts.