Honour layers.featuresCrs also in Feature.jsx

[manisandro]

Followup for 3fad9fd

[coveralls]

Coverage increased (+0.09%) to 80.893% when pulling 409c3c4 on sourcepole:featurescrs into 3c17884 on geosolutions-it:master.

[mbarto]

I would add getDefaultProps in Feature.jsx to have a default of 'EPSG:4326' for featureCrs. I know you already do that in the plugin, but Feature.jsx can be used in other contexts too, so a default should prevent crashes.

[coveralls]

Coverage increased (+0.09%) to 80.894% when pulling 8cd7f1b on sourcepole:featurescrs into 3c17884 on geosolutions-it:master.