This patch should resolve issue #2257 (Footer hides text)
Sometimes, depending on an epub style, some text is hidden by the progress bar (the mini one at the bottom).
I think it sounds more natural as chapter than as table of content, which is an implementation detail (i.e., the chapter markers are shown based on what's in the TOC).
Also removed redundant "this" from "Remaining pages in this chapter"
MenuSorter: forgot to add plugin style change
MenuSorter: worked out the final quirks
* Menu always compressed into tables without missing indexes for ipairs compatibility
* Orphans attached
* Separators no longer count as items
Our previous assumption is user will only choose between full or min
bar. The does not hold anymore as many more info has been added to the
mini bar and sometimes user might want to have both of them on. This
patch makes the reader behavior consistent when both bars are set to be
on for a document.
