When jumping to anchor or note, center the cursor
(first of several minor UI things noted while doing intro video!)
part of #171 - fake a cursor-moved signal on New (or Load) to clear the status line fields of residual data
Part of #171 - fix silly error that prevented fnote table from clearing on New
Part of #171 - tell pqView when doc changes and it clears the view
Fix #172, clear browse history on refresh
fix alignment of row count label
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.
Remember more files in the Files menu. This should be an option somewhere though.
In the Notes tab, ctrl-alt-p now adds the folio number, not the image number.
Detect the encoding to use to load a document. First, try utf8, and if that fails, try latin1. This is the same algo as guiguts.
Detect the encoding to use to save a document. First try latin1, and if that fails, save as utf8. This is the same algo as guiguts.