Volume relative numbering

[tjarls]

Added

• Added: Support series with a volume relative numbering by sorting them correctly in the issues tab. That should address this feature request: https://feats.kavitareader.com/posts/125/allow-sorting-of-issues-tab

Changed

• Changed: Display the volume along with the issue number

Fixed

• Fixed: Fixed the inconsistent display when scrolling in the issues tab when multiple issues share the same number

[majora2007]

This is the problem with providing Volume number in the Chapters card title, is that now I can't see the actual Chapter itself.

Perhaps instead we should make the tooltip show the full information so we can ensure the Chapter number always displays

[tjarls]

Please change your code to what I provided and also pull dev in, then we can get this merged.

Changes applied and branch rebased to current dev