Add granular control for individual service chapter visibility

[benedeki]

Background

Creating draft closer to desired final state.

Feature

Make it possible to switch on/off not just all service chapters as a group, but one by one.

Proposed Solution

Solution Ideas:

1. Setting show-service-chapters -> boolean, default true
2. Setting show-service-chapter1-> boolean, default show-service-chapters
3. Setting show-service-chapter2-> boolean, default `show-service-chapters
4. ...