Request to add watched filter

[Cutulus]

It would be helpful to show what has been watched or not.

Suggested implementation:

• Add Column to page
• Add checkbox to column
• Use a button with a function to filter out rows
• Button should be "Show / Hide watched"
• Use cookie to store data
• Use function to join data

[jorenvandeweyer]

@AceFire6 Would you accept a pull request that implements this behaviour?

I made a Tampermonkey script that adds this feature to the website. I could make a pull request for it with some changes.

[exhuma]

Duplicate of #14