Initial implementation of the config snapshot dialog.

xs/src/slic3r/Utils/Time.hpp

@@ -13,8 +13,11 @@ namespace Utils {
 extern time_t parse_time_ISO8601Z(const std::string &s);
 extern std::string format_time_ISO8601Z(time_t time);
 
+// Format the date and time from an UTC time according to the active locales and a local time zone.
+extern std::string format_local_date_time(time_t time);
+
 // There is no gmtime() on windows.
-time_t get_current_time_utc();
+extern time_t get_current_time_utc();
 
 }; // namespace Utils
 }; // namespace Slic3r