Add a GUI option for 'fuzzy' address-book handling

[colin0brass]

For:

• Improve address-book handling of differently written addresses that could practically be combined

Related to geo_gedcom: colin0brass/geo_gedcom#7

Add a GUI option for fuzz enable/disable

[D-Jeffrey]

I think this will go well with reworking the GUI in YAML, as I expect it need a new layout for the controls to captures these items. For example, should some of the settings from the Setup be captures elsewhere or does this Fuzz Enable/disable belong in the Menu Options -> Options Setup.