feature-9993-added

[Spaarsh]

Closes #9993

feature

Technical

Changes are limited to .html and .js files only. It is still a bit buggy on the front end side. A user may be shown 'No Image Selected' even if that is not the case. But the submission will be successfully done nonetheless.

Testing

1. Go to any works page.
2. Either click on the 'Add Another Issue'.
3. Add the details for a dummy issue and proceed.
4. Click on 'Manage Covers' button.
5. If the add.html page now features a paste option which successfully adds the new cover, the code is successful.

Screenshot

Stakeholders

@RayBB @cdrini @mekarpeles