Merge branch 'lilypond/translation'

* lilypond/translation:
  Backslash macro
  Updates, macros, capitalisation
  Spell check and other improvements
  Sort of cacophony relief, thanks to Trevor
  Repeatd paragraph in Spanish docs
  Two final sections from the LM
  PO update
  Moving objects
  Further tweaking and other sources of information
  Real music example
  Full PO update
  PO improvement
  Fixing Overlapping Notation
  Placement of objects
  Fix cross refs
  Typo
  Fix bad objects message
  Appearance of objects