Update WKTParser to handle optional entities

[Mrc0113]

WKTParser should be updated to allow for optional AUTHORITY & AXIS entities when parsing GEOGCS & PROJCS. Currently they result in parsing errors.

The best WKT entity definitions I can find are here: http:https://docs.geotools.org/stable/javadocs/org/opengis/referencing/doc-files/WKT.html

Here is a sample of a WKT that currenlty fails (after removing new lines & extra spaces)

PROJCS["US National Conformal Conic",
  GEOGCS["Unspecified datum based upon the International 1924 Authalic Sphere",
    DATUM["Not_specified_based_on_International_1924_Authalic_Sphere",
      SPHEROID["International 1924 AuthalicSphere", 6371229.0, 0.0, AUTHORITY["EPSG","7057"]],
      AUTHORITY["EPSG","6053"]],
    PRIMEM["Greenwich", 0.0, AUTHORITY["EPSG","8901"]],
    UNIT["degree", 0.017453292519943295],
    AXIS["Geodetic longitude", EAST],
    AXIS["Geodetic latitude", NORTH],
    AUTHORITY["EPSG","4053"]],
  PROJECTION["Lambert_Conformal_Conic_2SP"],
  PARAMETER["central_meridian", -95.0],
  PARAMETER["latitude_of_origin", 25.0],
  PARAMETER["standard_parallel_1", 24.999994999999995],
  PARAMETER["false_easting", 0.0],
  PARAMETER["false_northing", 0.0],
  PARAMETER["scale_factor", 1.0],
  PARAMETER["standard_parallel_2", 24.999994999999995],
  UNIT["m", 1.0],
  AXIS["Easting", EAST],
  AXIS["Northing", NORTH],
  AUTHORITY["EPSG","920001"]]

*Note that it would also be nice to not have the parsing fail when there is a space after a comma between entities.