Show entries of single day

[Alexander Herrmann]

• default day = today
• be able to select the day (day before, day after, no calendar or such)
• list the entries, visually prepared for editing but without editing functionality

Follow ups:

• #12
• #23

[Alexander Herrmann]

Data selection is a calendar now as it was easy to do.
Preparation for form only partially done, but all data is shown. That is due to not currently being sure how to handle the form.

[github-actions]

🎉 This issue has been resolved in version 1.1.0 🎉

The release is available on GitHub release

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