qTox will automatically import the old history on startup.
This new database code is much more robust.
It is very resilient and will not corrupt or disappear after a crash or
power failure, unlike the old code.
The on-disk database format is also much more compact now.
The database sync option in the advanced settings has been removed,
we know run many database operations asynchronously so performance
should not be a problem anymore, but we always ensure resiliency
in case of abrupt termination, so there is no tradeoff anymore.
That pull request made qTox crash in a number of ways, with no quick fix
available.
Hopefully there will be a way to fix crash, so that this commit could be
reverted, and fix applied.
user also wants to remove chat history. However confused user may not carefully read message and click "no" because he does
not want to remve contact. However in this case contact is in fact removed but history is preserved. It is also open to
possiblity that key smashing deletes contact by accident. This is very inconvenient because tox ids are long and hard to
memorize. If someone removes contact by accident then he would need to find id of that contact in order to contact him/her.
Sometimes this may be difficult.
New contact removal confirmation dialog prompts use to enter "YES" in the text boxin order to enable "OK" button so removal
can be accepted. It also has checkbox for history removal. Dialog will work with translations. Russian user would need to
enter "Да" in order to accept removal.
The license text was removed from the Advanced section of the settings
menu and placed into its own About section. Users can now also discover
the commit hash of the build they are running through the UI, instead of
having to comb through logs, or use git.
We now use a binary serialized format to save space and allow clean encryption of the user settings.
All the settings can (and should) be edited from the GUI so there is no loss of functionnality.
It can still read the old .ini format, and will seamlessly upgrade to the new format.
Fixes#1810
