Remove old debugging lines
Change name currentPageNumber to currentImageNumber
Move folio-format code to global level for pqPngs access
Display folio alongside image number in header field.
Document folio number in pqPngs display
Throw focus back to editor after jumping to a page.
Implement a formal model of Page metadata and use it, including
adding support for format code (same). Change ppqt to instantiate
the database model (in pqPages) and change table model to use it.
Use the formal Page metadata model instead of old list
use formal Page metadata in guiguts .bin output
Change button from <sd search to lang= search for markup removal
document numerous changes
Document using lang= and changed Pages table, plus minor edits.
Document (sort of) adding dictionaries
Fix issue #165 by re-fixing issue #152 - wait on progress bar, not mere status message
When a book's codec can't be inferred, give the user a utf/ltn/cancel choice
further fixin' for #153
Usability -- added Undo/Redo/Find/Find Next/Find Previous shortcuts in the Edit menu.
HTML Language check panel. (Work in progress)

TODO:
  * the column resizing is not working well
  * sorting by columns does not resize the rows height
Set background color of words flagged by the dictionary, instead of underlining them, which is easier to see.
Do not highlight scannos by default.