International login text

src/freedombone-app-tahoelafs

     if [ ! -d /var/www/tahoelafs/htdocs ]; then
         mkdir -p /var/www/tahoelafs/htdocs
     fi
+    TAHOELAFS_LOGIN_TEXT=$'Tahoe-LAFS login'
 
     tahoelafs_nginx_site=/etc/nginx/sites-available/tahoelafs
     echo 'server {' > $tahoelafs_nginx_site
     echo "  root /var/www/tahoelafs/htdocs;" >> $tahoelafs_nginx_site
     echo '' >> $tahoelafs_nginx_site
     echo '  location / {' >> $tahoelafs_nginx_site
-    echo '    auth_basic $"Tahoe-LAFS login";' >> $tahoelafs_nginx_site
+    echo "    auth_basic \"${TAHOELAFS_LOGIN_TEXT}\";" >> $tahoelafs_nginx_site
     echo '    auth_basic_user_file /etc/nginx/.htpasswd-tahoelafs;' >> $tahoelafs_nginx_site
     function_check nginx_limits
     nginx_limits tahoelafs '15m'