[FEAT] Allow replaying flashcards without waiting

[jabbalaci]

trafficstars

Currently, I'm forced to select if the card was hard / normal / easy. However, very often, I'd like to replay all my cards in the deck. But, even if I choose hard, I should wait some days. What if I don't want to wait at all?

Current workaround: remove the <!-- ... --> lines from the source. But it's a pain.

Request: next to hard / normal / easy, there should be a "Next" button that doesn't register anything in the .md source code. This way the deck could be replayed immediately, without waiting.

[navakelvin]

This needs to be implemented. One solution would be to allow changing the interval from hard to hours, minutes, or even seconds.

Waiting a whole day is so painful and unproductive.

[st3v3nmw]

Duplicate of #503 That issue is already triaged, will track this feature request there