* Remove outdated comments about srcSet value
We no longer distinguish between `undefined` and `null` for `srcSet`.
* Fix misleading URL shown
* Update/fix comments in <ImageOriginal>
* Simplify condition when to show image
I think this is not required since `showImage` will always stay false if tab !== 'preview' or me?.clickToLoadImg are true.
* Rename to imgproxyOnly
* Add info to imgproxyOnly setting
* Fix text of markdown links not used on imgproxy errors
* Fix rendering markdown links with text as images
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Co-authored-by: ekzyis <ek@stacker.news>