Merge pull request #1939 from gioman/fix_saga_213_kernel

fix SAGA 2.1.3 Kernel Density Estimation

Author: volaya

python/plugins/processing/algs/saga/description/2.1.3/KernelDensityEstimation.txt

@@ -6,5 +6,6 @@ ParameterNumber|RADIUS|Radius|None|None|10
 ParameterSelection|KERNEL|Kernel|[0] quartic kernel;[1] gaussian kernel
 Hardcoded|-TARGET_DEFINITION 0
 Extent TARGET_USER_XMIN TARGET_USER_XMAX TARGET_USER_YMIN TARGET_USER_YMAX
-ParameterNumber|USER_SIZE|Cellsize|None|None|100.0
-OutputRaster|USER_GRID|Grid
+ParameterNumber|TARGET_USER_SIZE|Cellsize|None|None|100.0
+ParameterSelection|TARGET_USER_FITS|Fit Choice|[0] nodes;[1] cells
+OutputRaster|TARGET_OUT_GRID|Grid