Merge branch 'master' into lilypond/translation

Merge branch 'master' into lilypond/translation

* master:
  Partially update French docs
  Docs: Use @rlsrnamed for link to snippets Top
  Update for Staff
  MusicXML: Implement harp-pedals, now that it's available in lilypond
  GDP NR Appendices: Add descriptions of indices
  New markup commands: \left-column and \right-column.
  Harp pedals: Cleanup
  Spanish docs: Fix link to IR / BassFigure (no longer NewBassFigure)
  Markup command indexing: don't use internal function names.
  Bump version.
  Compile fix...
  New regression tests should have 2.11.57...
  Docs: Add fret and harp pedal diagrams to markup category instrument-specific-markup
  Add instrument-specific-markup-interface, assign to TextScript and add (fret-board|harp-pedal)-details to it
  Feature: Add Harp pedal diagrams, i.e. a \harp-pedal markup function
  Add a make-line-stencil function, which correctly sets stencil extents
  Fix dangling links (citeseer, personal homepages, email Adresses) in the docs

Conflicts:

	Documentation/fr/user/introduction.itely