added format of the date displayed in the calendar header

[zinchenkoivan]

PR Checklist

Please check if your PR fulfills the following requirements:

• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

[ ] Bugfix
[x] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[ ] Documentation content changes
[ ] Other... Please describe:

What is the current behavior?

There is no option to change the date format in the date range header

What is the new behavior?

added option to change the date format in the date range header

Does this PR introduce a breaking change?

[ ] Yes
[x] No

Other information

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