GRASS WXGUI WMS service rendering

by sudeep495 for OSGeo - Open Source Geospatial Foundation

I will introduce several features that make WXGUI more user-friendly. These include adding WMS layer support for WXGUI. The selection features will be displayed as per the based on service GetCapabilities response. The parameters and the layers are to be displayed are extracted out of the xml response. This will be done dynamically.