Using kirby black on ion-tool bar and ion-content instead of using black

[AgreSanGit]

Which issue does this PR close?

This PR closes #2033

What is the new behavior?

Now using kirby black for page-title and toolbar instead of black

Does this PR introduce a breaking change?

• Yes
• No

Are there any additional context?

Checklist:

The following tasks should be carried out in sequence in order to follow the process of contributing correctly.

Reminders

• Make sure you have implemented tests following the guidelines in: "The good: Test".
• Make sure you have updated the cookbook with examples and showcases (for bug fixes, enhancements & new components).

Review

• Do a self-review.
• Request that the changes are code-reviewed
• Request that the changes are UX reviewed (only necessary if your PR introduces visual changes)

When the pull request has been approved it will be merged to develop by Team Kirby.

[jkaltoft]

👍

Make sure to get this UX reviewed before merging.

[henrikvoetmand]

UX review done! OK!