Improved (rst) messaging.

Example:

    Abjad IDE - scores

       1: Aracılık (2014)
       2: Betörung (2012)
       3: Blue Example Score (2013)
       4: Čáry (2006)
       5: Chrysanthemums (1995)
       6: Étude Example Score (2013)
       7: Gebiete (2013)
       8: L'archipel du corps (2011)
       9: Las manos mágicas
      10: Lidércfény (2008)
      11: L'imaginare (2010)
      12: Manifolds (2013)
      13: Mon seul désir (2009)
      14: Poème récursif (2005)
      15: Red Example Score (2013)
      16: Red Shift Hijinks (2005)
      17: Sekka (2007)
      18: Tack (1996)
      19: Territoires
      20: Traiettorie inargentate (2013)
      21: Zeit (1998)

          scores - copy (cp)
          scores - new (new)
          scores - remove (rm)
          scores - rename (ren)

    > rst
    Repository status for /Users/trevorbaca/Documents/abjad/scoremanager/scores/blue_example_score ... OK
    Repository status for /Users/trevorbaca/Documents/abjad/scoremanager/scores/etude_example_score ... OK
    Repository status for /Users/trevorbaca/Documents/abjad/scoremanager/scores/red_example_score ... OK
    Repository status for /Users/trevorbaca/Documents/scores/aracilik ... OK
    Repository status for /Users/trevorbaca/Documents/scores/archipel ... OK
    Repository status for /Users/trevorbaca/Documents/scores/betoerung ... OK
    Repository status for /Users/trevorbaca/Documents/scores/cary ... OK
    Repository status for /Users/trevorbaca/Documents/scores/chrysanthemums ... OK
    Repository status for /Users/trevorbaca/Documents/scores/desir ... OK
    Repository status for /Users/trevorbaca/Documents/scores/gebiete ... OK
    Repository status for /Users/trevorbaca/Documents/scores/imaginaire ... OK
    Repository status for /Users/trevorbaca/Documents/scores/lidercfeny ... OK
    Repository status for /Users/trevorbaca/Documents/scores/mannigfaltigkeiten ... OK
    Repository status for /Users/trevorbaca/Documents/scores/manos ... OK
    Repository status for /Users/trevorbaca/Documents/scores/recursif ... OK
    Repository status for /Users/trevorbaca/Documents/scores/red_shift ... OK
    Repository status for /Users/trevorbaca/Documents/scores/sekka ... OK
    Repository status for /Users/trevorbaca/Documents/scores/tack ... OK
    Repository status for /Users/trevorbaca/Documents/scores/territoires ... OK
    Repository status for /Users/trevorbaca/Documents/scores/traiettorie ... OK
    Repository status for /Users/trevorbaca/Documents/scores/zeit ... OK

    >