[FIX] Fix django configuration script

install/gargamelle/django_configure.sh

@@ -14,7 +14,7 @@ echo "::::: DJANGO :::::"
 
 
 
-/bin/su gargantua -c 'source /env_3-5/bin/activate &&\
+su gargantua -c 'source /srv/env_3-5/bin/activate &&\
     echo "Activated env" &&\
     /srv/gargantext/manage.py makemigrations &&\
     /srv/gargantext/manage.py migrate && \
@@ -24,4 +24,4 @@ echo "::::: DJANGO :::::"
     /srv/gargantext/dbmigrate.py && \
     /srv/gargantext/manage.py createsuperuser'
 
-/usr/sbin/service postgresql stop
+service postgresql stop