bidi.lua:
- Revert "Alias everything to Bidi.nowrap() when in LTR UI,
as using LTR isolates seems uneeded when already LTR" (part
of a628714f) which was a wrong assumption: we need proper
wrappers for all things paths. Enhance some of these wrappers.
- Fix GetText RTL wrapping which was losing empty lines and
trailing \n.
- Wrap all paths, directories, filenames in the code with
these wrappers.
- Wrap all book metadata (title, authors...) with BD.auto(),
as it helps fixing some edge cases (like open/close quotation
marks which are not considered as bracket types by FriBiDi).
(Needed some minor logic changes in CoverBrowser.)
- Tweak hyphenation menu text
- Update forgotten SortWidget for UI mirroring
- KoptConfig: update "justification" index for RTL re-ordering,
following the recent addition of the page_gap_height option.
- Alias everything to Bidi.nowrap() when in LTR UI, as using
LTR isolates seems uneeded when already LTR.
- Better wrapping of RTL filename by using auto direction and
LTR-isolating only the suffix so it's always on a side.
- menu.lua: handle bidi_wrap_func outside getMenuText(), which
may be used in other contexts.
- Add BD.filepath() and BD.dirpath()
Set default language (for Harfbuzz to pick up localized glyphs
in a font), default text direction, and UI element mirroring
depending on the UI language.
