Sort DDS section in HTML doc and a few fixes in the driver doc

git-svn-id: https://svn.osgeo.org/gdal/trunk/gdal@25803 f0d54148-0727-0410-94bb-9a71ac55c965
ECW: Additional patch to be run on top of previous (5.0.3) (GDAL_ECW_NON_UNICODE_AND_WARNINGS.patch, #5029)

git-svn-id: https://svn.osgeo.org/gdal/trunk/gdal@25804 f0d54148-0727-0410-94bb-9a71ac55c965