Admin Settings -> Basic Settings -> Email Server: User input should be trimmed to prevent frustration

[Oshimani]

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Is your feature request related to a problem? Please describe.

When submitting settings and credentials for the mail server (under Admin Settings -> Basic Settings -> Email Server), the user input should be treated in a more forgiving way.
When copying and pasting infos from your email provider it's easy to include leading or trailing whitespace characters. Since the input fields are very narrow, it is hard to check for this error.
I have setup two Nextcloud instances so far and both times I was struggeling with this admittedly user error.

Describe the solution you'd like

The input should automatically be trimmed before validation.

Describe alternatives you've considered

Make the form fields wider so the user can see their entire input string at once without scrolling side to side.

Additional context

I am talking about this view:

There should be plenty of room to make the form fields wider or obvious user error like leading and trailing whitespace characters should be removed (maybe not for the password).

I love your project, keep up the good work!