Prototype

Zone creation, edition work, layouts are defined, but it's a stand alone
prototype code. It's not optimized and can't be used into UrbApp for
now,
Be careful, in order to make this prototype works you need to put a
Images.jpeg file in your Android device Download repository !
Merge pull request #7 from gab-y/UrbApp_zoneFragment

Prototype
Modification of the branch to permite to transfert all functions from the activity into the fragment,
Not all the functions work well and need to be corrected
New Zone Fragment

- detect selfintersecting polygons
- display correctly colors or middle segment points whether zone
creation or edition
- code improved for proper implementation in project
Merge pull request #20 from gab-y/UrbApp_zoneFragment

Zone Fragment
Fix merge between Zone Fragment and UrbApp preserving the functions use by Characteristics Fragment.