Automatic image "Retry", and keyboard shortcut

[madmaxoft]

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Feature details

When an image fails to load from an online source, a "Retry" button is displayed (as requested in #212). However, clicking it requires moving the mouse to the middle of the screen, clicking the button and then moving the mouse away again, so as not to obstruct the image. With some sources, many images in a row fail to load, so the entire process is very distracting.

I believe Houdoku should, first, retry several times automatically on its own, without any input from the user. If that fails, the Retry button should be shown and a keyboard shortcut should be provided for it, so that mouse is not required at all.

I'm not sure if there's a pre-fetch function that would load images ahead of those being currently shown, but if there is, the auto-retry logic should be done there.

Additional information (optional)

No response