BABEL and REVO 2.3 redirect?

RewriteEngine On
RewriteBase /

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)$ index.php?q=$1 [L,QSA]

# Rewrite www.domain.com -> domain.com -- used with SEO Strict URLs plugin
RewriteCond %{HTTP_HOST} .
RewriteCond %{HTTP_HOST} !^mywebsite\.org [NC]
RewriteRule (.*) http://mywesbite.org/$1 [R=301,L]

# redirect all requests to /de/favicon.ico and /nl/favicon.ico
# to /favicon.ico
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(en|sr)/favicon.ico$ favicon.ico [L,QSA]
						  
# redirect all requests to /de/assets* and /nl/assets* to /assets*
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(en|sr)/assets(.*)$ assets$2 [L,QSA]
						 
# redirect all other requests to /de/* and /nl/*
# to index.php and set the cultureKey parameter
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(en|sr)?/?(.*)$ index.php?cultureKey=$1&q=$2 [L,QSA]