Improvement: When a state/province is selected, mark the country in the world map

[kfoxton]

As stated in the title, when a state/province is selected as visitied in its individual map, the country should be selected on the world map. Currently need to select places twice.

[ad3m3r5]

I'll add this to the list! I think adding a toggle to "mark parent country as visited" when marking the state/province would be a good solution, as it leaves it up to the user.