This commit add support to projection and grid transformations using the CTS library.
Because it's an important change in GDMS I have updated the version in the pom.
Merge origin/master into orbisgis_cts
Fix documentation and other PR comments.
I have only fixed the comments related to CTS integration because the new GDMS (h2 GIS)  will fix automatically the rest ;-)
Split crs tests
Fix javadoc
Fix javadoc
Fix getAsString
Small fix
Fix CRS tests due to CTS changes
Merge pull request #432 from ebocher/orbisgis_cts

Replace geotools referencing by the CTS library

This PR replaces the geootools referencing dependency to manage coordinate reference system by the CTS library. 
Because of several classes have been modified and the api is based on a new CRS model the GDMS version has been also updated in the pom.