Motivation / Problem

When joining a game, it is marked as last-joined. Next time you open the Multiplayer GUI, it was marked as "manually added". That means that slowly your list gets more and more "manually" added servers. Which is rather annoying.

I consider "manually" added only the ones you did via "add server". Last-joined should just be that, the one you joined last. If I join another server later, the server before should be forgotten about.

This is a personal opinion one could disagree with. But if we want this old behaviour, we really should not call it "manually", but "history" or something, possibly even with a date of the last join. But I digress, and not something for this PR.

Description

Make last-joined no longer marked as "manually".

Limitations

Checklist for review

Some things are not automated, and forgotten often. This list is a reminder for the reviewers.

• The bug fix is important enough to be backported? (label: 'backport requested')
• This PR affects the save game format? (label 'savegame upgrade')
• This PR affects the GS/AI API? (label 'needs review: Script API')
  • ai_changelog.hpp, gs_changelog.hpp need updating.
  • The compatibility wrappers (compat_*.nut) need updating.
• This PR affects the NewGRF API? (label 'needs review: NewGRF')
  • newgrf_debug_data.h may need updating.
  • PR must be added to API tracker