Merge branch 'develop' into feature/LR

doc/source/admin/install/debian.rst

 Step-by-step installation on Debian Linux
 =========================================
 
-.. note:: Tested on a fresh Debian 9.7 system (64-bit). The Virtual Machine has been configured on an English installation.
+.. note:: Tested on a fresh Debian 10 system (64-bit), but should work on any modern version of Debian. The Virtual Machine has been configured on an English installation.
   
 In this procedure we assume that PiAnoS will be served as document root (i.e. on ``/``). We'll use symlinks to manage the version changes. Running multiple instances and/or using different paths is left as an exercise.
 
@@ -104,7 +104,7 @@ The configuration of the posgreql database is done in the ``postgres.conf`` file
 
 	$ sudo nano /etc/postgresql/9.6/main/postgresql.conf
 
-If you use PostgreSQL 9.x, you have an additionnal setting to adapt: `standard_conforming_strings`, which must be set to 'off' for PiAnoS to work properly. The default is 'off' on versions prior to 9.x, and 'on' from there on, so 8.x users may want to check this value as well.
+If you use PostgreSQL 9.x or later, you have an additionnal setting to adapt: `standard_conforming_strings`, which must be set to 'off' for PiAnoS to work properly. The default is 'off' on versions prior to 9.x, and 'on' from there on, so 8.x users may want to check this value as well.
 
 .. code-block:: python