Add QGIS_PROJECT_FILE environement option

To be able to configure the project file in apache configuration
like:
SetEnv QGIS_PROJECT_FILE  <path to project file>.qgs
More general string value.

This option is used for GetFeature and GetfeatureInfo
And for WKT and GML format
Run scripts/update_ts_files.sh
Add French translation
Move updating of else rules list out of render feature
[processing] add Clip raster by extent algorithm (fix #8602)
[FEATURE] clearly mark deprecated plugins in plugin manager
[FEATURE] add option to show/hide deprecated plugins in plugin manager
Merge pull request #892 from alexbruy/deprecated_plugins

Deprecated plugins support for plugin manager
[FEATURE] Model-View based config dialog for Processing (fix #5427)
[Plugin Installer] Make version compare behaviour unified with the repository app
GRASS topology layers - display internal topo info
[processing] add points displacement algorithm
[processing] update points displacement alg to new ParameterVector syntax
[processing] add zonal statistics algorithm
[processing] add Points from polygons algorithm
[processing] add Points from lines algorithm (still needs some improvements)
fix rebase conflicts
[processing] add Points from vector algorithm
[processing] add Extract raster values to CSV algorithm