Fiw a bug created by too much cleaning in precedent commits. The zones in ZoneFragment know appear normally.
Add JTS function to detect intersections or zones defined in other ones.
There are still one or two bugs, they will be resolved soon.
Improve the way to display zones in CharacteristicsFragment.
Improve the way to intersects polygons and catch the TopologyExceptions with a dialog.
Fix merge.
Merge branch 'jparty-UrbApp_dev' into dev