First pass of VPF code cleanup

Signed-off-by: Jody Garnett <jody.garnett@gmail.com>
Setup an online test to facilitate testing against large sample data

Signed-off-by: Jody Garnett <jody.garnett@gmail.com>
untangling VPFColumn from AttributeDescriptor

Signed-off-by: Jody Garnett <jody.garnett@gmail.com>
separate out VPFColumn from AttributeDescriptor
Initial run of tests and evaluation of codebase
[GEOT-4538] Support repeated and randomized graphic fills in polygons - fixes to vendor option names
Fix broken link to user guide
Empty mosaic work
Merge pull request #300 from geosolutions-it/GEOT-4593

GEOT-4593: Support an EmptyMosaic creation
Merge pull request #301 from jodygarnett/vpf_cleanup

VPF FeatureType Cleanup GEOT-2347
Make image comparisons work with jdk 7
[GEOT-4602] Fix SQLServer support for Z coordinates (in native serialization mode)
add featuretypename to exception message for better error search

https://jira.codehaus.org/browse/GEOS-6104
Merge pull request #303 from g3o/master

add featuretypename to exception message for better error search
[GEOT-3407] org.geotools.data.oracle.sdo.SDO.createPoint throws IllegalArgumentException
Add hint property (Map<String,String>) to GeneralParameterValue interface
and AbstractParameter which implements it. Adding this in support of elevation
dimension default work.