Tour strings are not translatable, should be "label" in schema

Problem/Motivation

Tour strings are not translatable, should be "label" in schema. Furthermore we should check if anything else is translatable correctly.

Steps to reproduce

Try translating some configuration like

• Tour available text
• Tour not available text

Proposed resolution

1. Correct from type "text" to "label" in schema
2. Add a config_translation .yml
3. Check translatability of the Tour tooltips and entities in general - might also have other issues

Remaining tasks

User interface changes

API changes

Data model changes