Taking a look at your file there's some things that may be affecting to the result you want to get:
First, why have you got at the tope of the file the apache directives to activate the
RewirteEngine? I mean, with the rule:
RewriteRule /<none> / [L,R]
I'm not sure what you are trying to achieve.
Second, this may not be affecting, but it's quite important that you put the correct tabulation to the lines, so the
</IfModule> line should be aligned with the
Thanks and best regards