As I'm trying to find out how the configuring works in 7.5 I'm making a question here meanwhile..
In 7.0 we had
but when I created a new project in 7.5 my config file doesn't include
any of these settings except workflowsettings.
So is everything saved to the database?
I think that the reason they are not present in the default configuration files is that they are not required any more. There was an effort done to reduce the amount of required configuration, and instead use sensible defaults.
If you want to change any of the default values, you need to add that section. If you are unsure how they should look, there should be information in the SDK, http://world.episerver.com/Documentation/Items/Developers-Guide/EPiServer-CMS/75/Configuration/Configuration/.
Thank you Per! :)