created_at represents the time when the configuration has been persisted to disk.
loaded_at represents the time when the configuration has actually been used.
If created_at is larger than loaded_at, then the Core needs a reload in order
to apply the latest configuration.
if created_at is lower than laoded_at, then the Core applied the latest
configuration.
The value of updated_at is irrelevant and shouldn't be used.
If no path is given in the environment variable CORE_CONFIGFILE, different
standard locations will be probed:
- os.UserConfigDir() + /datarhei-core/config.js
- os.UserHomeDir() + /.config/datarhei-core/config.js
- ./config/config.js
If the config.js doesn't exist in any of these locations, it will be
assumed at ./config/config.js
