Updated Lithuanian translation
Added initial panning support for large custom minefields
Updated Spanish translation
Updated Spanish translation
appdata: update license metadata
Use the symbolic flag icon instead of the replacement
Only show scrollbars if required.
https://bugzilla.gnome.org/show_bug.cgi?id=730031

Only show the scrollbars if the screen size is smaller than the size
required to display the full mine grid with the minimum minefield size.