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
[FEATURE] New edit menu for composer
Change cut/copy/paste functions to actions and add to edit menu
Move undo/redo/delete to edit menu
Rearrange layout menu to logical order
[FEATURE] Add select all, select none and invert selection to composer edit menu
Copy things from WFS server to WMS server
Add GML format in GetFeatureInfo requests
[Plugin Installer] More uniform behaviour when comparing versions: always exclude any non-numeric parts
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