Remove // NOCOMPILE from vector-wfs
Merge pull request #3051 from elemoine/compile-wfs

Remove // NOCOMPILE from vector-wfs
Add new ratio property to ol.source.Vector
Add new ratio property to olx.source.FormatVectorOptions
Add new ratio property to olx.source.GeoJSONOptions
Use vector ratio in ol.renderer.canvas.VectorLayer
Use vector ratio in ol.renderer.dom.VectorLayer
Use vector ratio in ol.renderer.webgl.VectorLayer