Fix server-side default of collapse_message_with_subject = true

This setting was being ignored after the transition to server-side configuration. Make sure it's honoured again.

This breaks user configuration of same setting.

closed

Explain how. I tested this with a server that had it default to off (can be turned on), and a server that had it default to on (can be turned off).

reopened

This setting right here:

Gets overwritten on page refresh with server ones if you apply your changes. Some users have been complaining #143 (closed) about that the setting specifically doesn't get saved on page refresh even after a lot of time has passed. Commits 5726be68 and 6e64324d fix that by changing the name of server provided one and adding a condition to fall back to server-provided one if user setting doesn't exist, though until !343 (merged) is merged there may be some issues related to user config always existing.

In !343 (merged) it's a different approach and user settings are stored separately from server settings.

Please note that this MR will reopen #143 (closed)

I've added something to display what instance default is in !343 (merged)

obsoleted by !343 (merged)

closed