refs #9178
- we have to take care that we don't end up in circular dependencies
- e.g. API requires UrlService and UrlService needs to require the API (for requesting data)
- update the references
- we would like to get rid of the utils folder, this is/was the most complicated change
refs #9178
- Introduce the /services/ folder
- Move xmlrpc there
- Move slack there
- In slack: remove a usage of the settings API that should use settingsCache
- In slack: Simplify the tests
- Various tiny changes to move towards code consistency