fix: #61 LayerGroup tests are failing on master
VirtualTable support - add encoders
VirtualTable support - add add/set/getNativeName to GSResourceEncoder
VirtualTable support - fix GSVirtualTableEncoder & add encoder tests
VirtualTable - fix Encoder & tests according review comments
VirtualTable - update javadoc for GSVirtualTableEncoder
VirtualTable support - fix encoders
VirtualTable support - fix GSFeatureTypeEncoder + add test data &
setting info for integration test
Merge pull request #67 from eblondel/master-65-virtualtable-support

#65 Master 65 virtualtable encoder support