[Enhancement] Generate Cover from Book Details
Relatively minor/rather self-explanatory feature request, I'd like to be able to select the "Generate Default Cover"/"Generate Cover" option from the right click menu on the cover in the book details window, rather than having to get into the metadata editing window. If this is undesired behavior, since editing things is exactly what that window's for, I understand, but since the option to remove the cover was already there I thought I'd throw this out there... it'd make my life ever-so-slightly easier a couple times a week :). Thanks for consideration...
FWIW, I'm running calibre 2.12 on linux mint MATE, but I assume that info's only really needed for bugs...