[JENKINS-69860] - Close button removed.

[Artmorse]

You can find all the issue details here.

This issue was initially the PR#47 but after some discussions, we are arrived to the conclusion to just removed the Close button.

Why have we decided to remove the Close button ?
It used the window.close() javascript function which don't work anymore (see this StackOverflow thread). So why keep something which does not work from a while ?
This view will be displayed just one time (because Jenkins will store the credentials).

The screenshot below show the UI before.

The screenshot bellow show the "new" UI.

Now, we don't have the CSP issue and the button which didn't work has been removed.

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[Artmorse]

Someone can add the hacktoberfest and hacktoberfest-accepted labels to this PR because it seems that this repository is not participating in Hacktoberfest ? 😊