Remove the single downloader function and put everything into the queue

[makedir]

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• I have checked the issue page for duplicates
• I am running the latest version (download here)

Write your feature request here

Please remove the single downloader, it makes zero sense. I often accidentally click on download and then have to wait ages for it to finish, where I wanted to add several jobs to the queue.

Just put every job into the queue, instead of blocking the gui with a single job.