clipping the raster layers around the mask instead of hiding them entirely
put the mask on its own layer to ensure it's always on top
Feature module.
Merge branch 'develop' of https://github.com/VlaamseMilieumaatschappij/mf-geoadmin3 into develop
Merge branch 'develop' into draw

Conflicts:
	src/js/GaModule.js
Test page.
Merge branch 'develop' into draw
[+] FeatureLayers