for my old theme “Mokka” it was necessary to have over 13 (!) different image size-variants of an image, for different views (like post-preview image 451×600, recommended post image 150×150, etc.) and responsive-resolution reasons. You can imagine, that I have tons of Images on my server. Now with JNews, can i delete these image-size-variants and only use the full-res ones? Or does JNews also needs different image-size-variants like Mokka?