GRASS GIS back in PyWPS

In recent pull request https://github.com/geopython/pywps/pull/145, we have add support for temporary GRASS GIS http://grass.osgeo.org LOCATION and MAPSET along with GRASS environment suitable for running grass.script and pygrass code from PyWPS process. This shall be part of PyWPS 4.0 stable release.

GRASS GIS