Merge branch '2.2' into 3.0

# Conflicts:
#	gns3server/controller/__init__.py
#	gns3server/controller/compute.py
#	gns3server/schemas/gns3vm.py
#	gns3server/utils/application_id.py
#	gns3server/version.py
#	gns3server/web/web_server.py

scripts/remote-install.sh

@@ -260,7 +260,7 @@ Conflicts=shutdown.target
 User=gns3
 Group=gns3
 PermissionsStartOnly=true
-Environment="PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
+EnvironmentFile=/etc/environment
 ExecStartPre=/bin/mkdir -p /var/log/gns3 /var/run/gns3
 ExecStartPre=/bin/chown -R gns3:gns3 /var/log/gns3 /var/run/gns3
 ExecStart=/usr/bin/gns3server --log /var/log/gns3/gns3.log