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Description
I implemented a banner for DT. The banner can be configured by administrators through 'Administration'->'Configuration'->'Banner'.
The banner can be configured via a preset color scheme and a simple message, or by using the custom HTML text. In both cases. The banner can be made dismissable. If a banner is dismissed, its closed until the user logs in again.
In the custom HTML field you can define size, padding etc. as well as add pictures or icons.
The banner will not be visible in a any case on the login page, it is only visible to logged in users.
Addressed Issue
Addressed issue #1418 .
Additional Details
Used GithubCopilot and ChatGPT for understanding existing codebase and suggest changes.
Impressions:
Banner configured with preset color scheme:

Banner configured with custom HTML text:

Checklist