Improve developer experience

Problem/Motivation

The creation of the files required for an update could still be improved. Current steps are:

• Fresh Install
• Make config changes
• Export new config and update your config files
• Reinstall with old configuration files (propably by stashing the changes or creating a new branch)
• Get back new configuration files
• Run update helper

This is quite complex and unintuitive. It's also slow, since you need to install twice.

Proposed resolution

Simplify the workflow by inverting the diff (compare new active config with unchanged config files) and directly exporting the new config to the corresponding file.
The workflow would look like this:

• Fresh Install
• Make changes in the active config
• Run update helper

Th update helper would calculate the diff as before, create the code and also export the new config to update the config directory.