Implement scan preview page

[CoolCat467]

Instead of redirecting people to the page with the scan that just completed, send them to a page that embeds the scanned image and has nice buttons to download the scanned image, go back to the main page, and edit the settings of the scanner that was used to scan that image.

[Spinachboul]

Please assign this issue to me
I have experience in working in flask
@CoolCat467

[CoolCat467]

Am I missing something on the hacktoberfest website? I don't remember reading anything about being required to assign people to a particular issue for it to count, and I am hesitant to assign an issue to anyone to be honest. If there is a reason I should assign issues, do not hesitate to tell me. Otherwise, just submit a pull request and everything will be work out fine.

Sorry for ranting a little bit, it's just a bit strange when three people have asked to be assigned to issues in the past and then nothing happens. Maybe I should add something about this in the contribution guide.

[Spinachboul]

Yeah actually its my first time participating in hacktoberfest 😅