See issue #14.
Four panels use custom widgets on the Right-Hand-Side tabs to control
visibility. These panels are:
PANEL NAME VIEWABLE ON NAVIGATION TAB
------------ --------------------------
Book summary Plots
Project tree Redaction
Metadata Redaction
Story line Redaction
When the custom widget is created, it is assigned a name that is
marked for translation. The final text name appears to have a
shortcut letter automatically assigned. For example in English:
Book summary -> B&ook summary
Project tree -> &Project tree
Metadata -> &Metadata
Story line -> Story &line
On restoration the choice to restore state is based on successful
comparison between title and btn.text(). Currently this comparison
fails because title contains "&" and btn.text() does not contain "&".
Fix by removing all ampersand "&" characters from both title and
btn.text() when performing comparison.