Disable geometry check per layer in 1.6

[juliensam]

Fix #2583

Added the geometry_validation UIMetadata to disable the check ST_IsValid and ST_IsSimple. Simply set it to False to disable it. Added tests and there's only one commit.

[juliensam]

Ready for review

[sbrunner]

Thanks @juliensam :-)

[sbrunner]

I think that this line: should be moved https://github.com/juliensam/c2cgeoportal/blob/ecde7f5dc5fe73a2660c90840d127f5d181c5b23/c2cgeoportal/views/layers.py#L326...

To get something like this:

            if self._get_ui_metadata(
                    layer, "geometry_validation", str(self.settings.get("geometry_validation", "false"))).lower() != "false":
                self._validate_geometry(spatial_elt)

and moved in a method to don't have duplicated code :-)

[sbrunner]

In other word the geometry_validation validation settings will be the default value...

[juliensam]

I'm thinkig of adding a _get_validation_setting method in the Layer model that returns a boolean. How does that sound?

[juliensam]

Or should it be in LayerV1?

[juliensam]

Oups! no the _get_ui_metadata is in the view. Scratch that.

[sbrunner]

Thanks :-)

[juliensam]

Ready to merge