Worldmap travel issues from random encounter map

[DudeMcDude]

A couple of issues occurring when loading a savegame from a random encounter:

1. Source/Destination are not saved in savegame This leads to beeline paths when loading a savegame after quitting the game. Possible other weird shit e.g. if you load from a different RE route.
2. Coordinate is saved relative to current resolution. Exiting, changing the resolution and loading the save will fuck things up.