Add config for disclaimer

[3ddyBoi]

Currently, the disclaimer element is being added to the page using an env-variable. However, it would be better practice to add a config option for this element instead. This would allow for more flexibility and control over the disclaimer element, as well as make it easier for users to customize and update the disclaimer text.

I suggest adding a config option for the disclaimer element, with a default value of an empty string. This will allow users of this repo to easily add their own custom disclaimer text, or leave it blank if they do not wish to include a disclaimer.

I believe this change would improve the overall usability and flexibility of the project.