### Tasks

- On the WP page there is no breadcrumb.
- The add-column icon is replaced by a ‘plus’ with a small font size.
- In the hierarchy mode:
- distance between arrow and text is reduced
- Level 1 icon is at the same vertical line as level 0 text
- Level 0 text is at the same vertical line as table header ‘Subject’
- The arrow in the create button shall be smaller
- The logo shall be smaller Begin of the insertion
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