fix grass64 v.to.points
[Processing] Remove print statements which sometimes cause an exception
[Processing] Add GRASS r.univar and update r.fillnulls
[Processing] Hide some OTB params under Advanced button and improve handling of advanced parameters
[Processing] Comment debuging statements in OTB which clutter up Processing log
[Processing] Add *.* file filter to batch processing input panel
Merge pull request #1512 from radosuav/small_processing_fixes_3

[Processing] Small fixes
Merge pull request #1510 from gioman/v_points

[processing] fix grass64 v.to.points
Only add feature once when python init function is set on attribute form
Fix #10862
Synchronize values of repeating widgets on forms
Fix #10877
[processing] fixed  some GRASS descriptions
[processing] fixed SAGA description
[processing] improved SAGA multiple extents detection
[processing] fixed issues when loading parameters
[processin] fixed extent checking in saga algorithm
[processing] made xgrids parameter in raster calculator optional
[processing] fixed fileFilter for file outputs
Followup 9f07383
Fix attribute dialog crash on close
Set focus to first widget on attribute form