More comprehensive chat history

[boothj5]

Many people have requested the option to be able to scroll through all previous logs with a contact whilst in chat with that contact.

Some form of streaming from the available logs to the current window would be required.

[jubalh]

Once we support MAM we could get the history from there instead of from the log files. This way it would also include content send from other devices.

[mdosch]

I see some value to also include the log files as MAM is usually not unlimited so it would be nice if you could also access your old messages from profanity.