Hotfix rework to repetions-avoidance logic

Another small bugfix...

This change should hopefully avoid any further repetitions of the events. Let me know how it works!

fixed bug to only trigger the events once in Britain - it fits the plot better that way.

For the sake of completeness, I've decided to add a romance option for Gunnarr the Ulfhedinn.
It's a purely designed to match with a female player character, as I cannot seem to see Gunnar with another man.

This mod includes three camping events, and a small tweak to the Conversation at the Homestead during the summer. It will actually also unlock the "Freyja's touch" achievement, if you haven't gotten it before.
As with my other mod, I did not fully test all possible outcomes, simply because of the amount of possible branching. So if you encounter any bugs, let me know and I'll fix them as quickly as possible!