feature-9069: Improve mobile top menu and add calendar icon

[ntthitrinh]

Fixes #9069

Short description of what this resolves:

Improve mobile top menu and add calendar icon

Changes proposed in this pull request:

• Improve mobile top menu and add calendar icon

Checklist

• [x] I have read the Contribution & Best practices Guide.
• [x] My branch is up-to-date with the Upstream development branch.
• [ ] The acceptance, integration, unit tests and linter pass locally with my changes
• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] I have added necessary documentation (if appropriate)

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Name	Status	Preview	Comments	Updated (UTC)
open-event-frontend	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Aug 14, 2023 11:57am