Do not translate river annotations twice. (issue1370) This fixes mainvaluesW at gauge becuase they are already translated when fetched from the artifact. I hope this is not necessary for other annotations. I could not see any.

SYMBOLSET
SYMBOL
  NAME 'point'
  TYPE ELLIPSE
  POINTS
    1 1
  END
  FILLED TRUE
END
SYMBOL
  NAME "square"
  TYPE VECTOR
  POINTS
    0 0
    0 1
    1 1
    1 0
    0 0
  END
  FILLED TRUE
END
END