Hot CTS changes -> upgrade to 1.5 X

[ebocher]

This PR introduces many changes and improvements proposed by @mukoki . Due to the number of changes it was very hard to merge the @mukoki PR so I decide to check all commits and check one by one.

API

• Method signature simplified in CoordinateOperationFactory
• CRSFactory / Registry more format-independant
• Registry should be able to manage CRS from
  • memory , using a simple Map
  • database with a getCoordinateReferenceSystem able to build the CRS from SQL queries
• Beside Registry interface, the main change is in
  • AbstractProjRegistry which now implements
  • getCoordinateReferenceSystem(Identifier) using CRSHelper.
• Implements GeoTransformation interface

Bugs

• Force 3D transformation for 3D CRS, deactivate a test on New Caledonia
• Inverse transformation was not always inserted
• Update registry with EPSG codes from 3873 to 3885 for Finland
• Fixed a bug in CoordinateSequence simplification mechanism, improved Projection.inverse operations, improved/add comments on CompoundCRS and add some Finnish projection.

Features

• Do not compute inverse if it has already been computed.
• Change this interface signature by adding isIdentity method
• Improve getPrecision, cleanSequence and toString methods
• Adds equals, hashCode and isIdentity methods
• Improve exception management in coordinate operations
• Improve UnitConverters creation
• Better handling of WebMercator and NTF to RGF93
• Large grid file is managed out of the library and downloaded into a .cts folder

[ebocher]

Wait

[ebocher]

I looking for a solution to manage with travis the .cts folder that stores all grids.

[ebocher]

Please do not merge.