Store default settings for new addressbooks in accounts #398
Description
Currently, after initial creation of an account we do not store the addressbook settings (group type, refresh time, etc.) anywhere. With rediscovery, when new addressbooks are found for a user-defined account we can therefore only use default settings for the new addressbook, but it would be preferable to use the settings the user provided when creating the account. We should also allow the user to change these default settings later.
Idea for storage: Use a special template addressbook per account that can be stored in the addressbooks table. This way, we don’t need a new table, just a marker flag for the template addressbooks.