Lua: Finder methods for Achievements and Disasters
Split from #42884 reported by Ihnatus.
Add find.achievement() and find.disaster() methods. This is relative high priority as without them savegame handling of such lua variables does not work, as reported by nef in http://forum.freeciv.org/f/viewtopic.php?f=14&t=91972
Split from #42884 reported by Ihnatus.
Add find.achievement() and find.disaster() methods. This is relative high priority as without them savegame handling of such lua variables does not work, as reported by nef in http://forum.freeciv.org/f/viewtopic.php?f=14&t=91972