Merge pull request #1637 from gioman/saga_grid_cell_index

fix SAGA 2.1.2 Sort Grid module: name and parameters changed

Author: volaya

python/plugins/processing/algs/saga/description/SortGrid.txt renamed to python/plugins/processing/algs/saga/description/2.0.8_SortGrid.txt

@@ -0,0 +1,5 @@
+Grid Cell Index
+grid_tools
+ParameterRaster|GRID|Input Grid|False
+ParameterSelection|ORDER|Index|[0] ascending;[1] descending|0
+OutputRaster|INDEX|Sorted Grid