Added -q option to a2enconf/a2disconf to suppress their output.

install.sh

@@ -203,7 +203,7 @@ then
                 # proceed with upgrade
                 
                 # take app offline during upgrade
-                a2disconf $install_loc_in
+                a2disconf -q $install_loc_in 
                 systemctl reload apache2
 
                 datestamp=$(date +%Y-%m-%d_%H:%M:%S)
@@ -407,7 +407,7 @@ echo "$APP_NAME has been $operation."
 base_url=$install_loc_in
 if [[ "$operation" == "upgraded" ]]
 then
-    a2enconf $base_url
+    a2enconf -q $base_url
     systemctl reload apache2
 fi
 if [[ "$operation" == "installed" ]]
@@ -425,7 +425,7 @@ then
     read enconf
     if [[ "$enconf" == "" || "$enconf" == "Y" || "$enconf" == "y" ]] 
     then
-        a2enconf $base_url.conf >/dev/null
+        a2enconf -q $base_url.conf >/dev/null
         systemctl reload apache2
         echo "You can now point a web browser to $base_url on your web server "
         echo "to set up and configure $APP_NAME."