Doc-de: Corrections to German docs from Jakob Schöttl
Doc-de: fix by Markus Olbrich.
Merge branch 'master' of /home/jcharles/GIT/Lily/. into translation
Doc-fr: updates LM

common notation and tweaks
Doc: typos in lilypond-book.itely
Doc-fr: updates NR
Doc-fr: updates AU
Issue 4169: Line- and page-breaking syntactic sugar

  Install line- and page-breaking controls and document them.

  Remove now-redundant section on Explicit breaks, preserving the
  snippet showing how to use an extra voice to contain break commands.

  Amend indexing.
Doc: Issue 1154: Document tie detail properties
Add Janek Warchoł's email to authors.itexi

...and change description to a more serious one.
Doc: Issue 4168: Add 'Dimensions' to Useful concepts
Doc: Issue 3324: Add explanation of clashing note columns warning
Doc: Issue 4175: Correct vector form in break-visibility table
Issue 3286: add single-C time signature style

This style is identical to single-digit except that C is printed
instead of 4 and cut-C is printed instead of 2.
Issue 461: LilyPond should accept a tie between notes which are enharmonically identical

This patch connects the respective notes in Tie_engraver and
Tie_performer as a fallback after exhausting regular tie associations.
It also keeps the accidental engraver from applying its special rules
for tied notes that don't have exactly matching pitches.

No attempt is made to adjust the visuals of the ties: they will remain
horizontal, focused on the left note head.
Issue 4170: tie-formatting: s/Stem::note_head_positions/Stem::head_positions/

Looking at the return value here rather strongly suggests that the wrong
function is being called.
Issue 4151: implicitTimeSignatureVisibility->initialTimeSignatureVisibility

  Change property name
  Change description
  Add convert-ly rule
  Update all language docs
Doc: Issue 4149: Clarify some \paper and \layout variables:

  check-consistency
  indent
  line-width
  short-indent
Doc: Issue 4043: shortest duration is not included in --verbose output

  Remove the statement that the shortest duration is printed as part
  of the --verbose output; it isn't.
Use number-pair-list? with 'control-points

The predicate number-pair-list? is a better fit than list?.