Changes:
* Added larger typeface for zoomed notes as a preference.
* In both the navigation window and the pedigree window (in addition to typing F, M, P and B), added up-arrow for father, down-arrow for mother, right-arrow for partner and left-arrow for back.
* Corrected the generation number in the pedigree window when using these keyboard actions. As a result, it was necessary to change next/previous/first/last person in the navigation window to use command-right/left/up/down arrow.
* Updated Reference Guide to reflect above changes.