WFS not loaded when additional attributes are in URL

[fzadrazil]

Bug

Describe the bug
When trying to add WFS by its url like this
https://maps.geocloud.sk/geoserver/sizp/wfs?service=WFS&version=2.0.0&request=GetCapabilities
HSLayers thows and error.

When I delete the unnecessary URL parameters, it adds the service correctly.
https://maps.geocloud.sk/geoserver/sizp/wfs

Other issue is, that the layer is not visible or zoomable when added in the map.

Expected behavior
Adding the layer should not be dependent on the query string parameters in the URL.

[FilipLeitner]

Two really interesting cases in here:

• First problem was connected to version=2.0.0 which requires 'typeNames' instead of 'typeName' request parameter
• Layer is not zoomable because no features are loaded. The reason is that the service is using URI notation to define GML feature CRS which is not recognised by openLayers e.g.
  <gml:Point srsName="http://www.opengis.net/gml/srs/epsg.xml#5514" gml:id="kontroly_ibb.1.geom"> .... </gml:Point>
  Solved by registering URI aliases