Enhancement #1253022.
Wire up the split in preview button (not yet implemented)
Quick view: Show the title/author/series columns in the same order as in the main book list. Fixes #1253022 [[Enhancement] Quickview column order](https://bugs.launchpad.net/calibre/+bug/1253022)

Merge branch 'master' of https://github.com/cbhaley/calibre