Application: gvSIG desktop

The coordinate transformations (EPSG, manual, NTv2) are not persistent since gvSIG 2.1 at least.
How to reproduce the issue:

• create and open a view, e.g. in EPSG:4326;
• add one (or more) layer(s) defined e.g. in EPSG:2303x and apply a coordinate transformation (EPSG, manual, NTv2 grid);
• exit from gvSIG (see the gvSIG.log in attachment).

Extract from the gvSIG.log:

ERROR AWT-EventQueue-0 org.gvsig.andami.Launcher$TerminationProcess - There was an error exiting application, can't save plugins properties
Can't save data of plugin org.gvsig.projection.app.jcrs.
    at org.gvsig.andami.PluginServices.savePluginProperties(PluginServices.java:807)

In practise, if we execute gvSIG again and try to do the same tasks described above, the CRS used before is not associated to a coordinate transformation among the recent CRSs. So the user is forced to define each time the transformation to use.

Related to #3089.