Resolving the bug of zone coloration in zoneFragment.
Add a button to unlink PixelGeom.
Also deselect the PixelGeoms when they have been characterized.
Merge branch 'dev' of https://github.com/Mendroyxx/FeatureApp.git into urbapp_last
Display zone color in Zone Fragment as defined in Characteristics
Fragment.
User can choose number of points
Reduce the size of the buttons is CharacteristicsFragment.
Move the attribute selected and linkedPixelGeom from PixelGeom to Element to make it more logical and avoid issues when editing the PixelGeom of a (weak-)linked Element.
It's now impossible to validate a zone with a self intersecting polygon
or less-than-3-points polygon
Implementation of the combinason of a picture with severals project which are already inthe database.
Merge pull request #89 from jparty/urbapp_last

Add a button to unlink PixelGeom.
Merge pull request #90 from gab-y/dev

Bug fixes
Merge pull request #91 from SebastienCohendet/dev

User can choose number of points
Merge pull request #92 from nicolasdavid/dev

over effect + set materials + set element types
Merge branch 'dev' of https://github.com/Mendroyxx/FeatureApp into dev
Delete most reference to "zone" instead of Element in UtilCharacteristicsZone.
Also simplify the method to get type and material of the selected Elements.
Fix bugs.
Implementation of genericity in the function getting the elemnt by his id.
Fixing the multi project/photo and the loading of information from database.
Merge pull request #93 from jparty/urbapp_last

Delete most reference to "zone"...
Merge branch 'dev' of https://github.com/Mendroyxx/FeatureApp into dev