Refactor pakcage name to fr.cea.ig
Many change mainly to be able to display all alternative way. Still
working on, not ready to use.
Enhance parsing. Now Term know their childs.
UPA -> ULS1, ULS2 ...
ULS1 -> UER1, UER2 ...
Node and variant object are not used anymore
Add Variant class and his unit test
TermRelations contains reference to their subcategories
UPA -> ULS
ULS -> UER
Relation identify a term instead of TermRelations. You can check if
instance are UPA,UCR, UER, ULS, UPC ...
removing model folder
Add 'model/' from commit '24822c89e35844aa9ea38707141579992a674735'

git-subtree-dir: model
git-subtree-mainline: 6510367383a769de45dc9adf3ee9ca2e541d39e6
git-subtree-split: 24822c89e35844aa9ea38707141579992a674735
add gradle support