[processing] added 'nomodeler' option to scripts
[processing] some minor improvements in script algorithm
[processing] added gdal algs to simplified interface, replacing saga ones
[processing] some minor cleaning
[processing] catch error when local help files fail when trying to find version number of script
[processing] removed geoserver algorithms and moved postgis ones to qgis agorithms group
[processing] rst files are now the default for help files
[processing] added help files for algs in qgis group

Most help files missing content