Changes

:There should be very few warnings or fatal errors. Warnings related to new languages using default values in their headers are acceptable. There will also be some fatal errors reported due to the non-standard way we handle inflected dates. See the section on [https://gramps-project.org/wiki/index.php/Date_Handler#Localizing_the_date_formats Localizing the date formats] in the [https://gramps-project.org/wiki/index.php/Date_Handler Date Handler] wiki page for further details. For example "{long_month}" may be translated as "{long_month.fforms[Р]}".