[processing] enabled more gdal output extensions
[processing] enable non-tif outputs in gdaldem algorithms
[processing]removed debug print lines
[processing] fixed list of algorithms in simplified mode
[processing] fixed string representation of outputs
[processing] fixed #11327
Convert values to target field format

For the field calculator and virtual fields.

Fix #11000
Fix #10995
Fix #10993
Allow usage of virtual fields also for layer w/o add attribute support

Fix #11168
Use standard test font for QgsComposerHtml test