servers.txt updating

[EternalHarvest]

There are various problems with server entries being renamed, merged or changed contents (server list).

Obviously there should be option like "title" because section names (used in user configuration) shouldn't be changed if not necessary. "Reconfigure master server" choice in character select screen would be nice too. If user changes master server (interactively), "server" option should be cleared.

These aren't only problems, but easiest to solve.