Allow more file types in chat

I have reviewed the MR and can see the field type has been changed. (Added before and after screenshot).

Getting merged, thanks @bircher and @libbna. Its a pity with images variable in the constructor, but to keep it not breaking its good.

That is definitely unfortunate it uses images/image_/etc :(

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Automatically closed - issue fixed for 2 weeks with no activity.

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