feature #4708 Change Apache php-fpm proxy configuration (TeLiXj)

This PR was submitted for the 2.6 branch but it was merged into the 2.3 branch instead (closes #4708).

Discussion
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Change Apache php-fpm proxy configuration

| Q             | A
| ------------- | ---
| Doc fix?      | Yes
| New docs?     | No
| Applies to    | All
| Fixed tickets |

I had problems using ProxyPassMatch and mod_rewrite and now I use SetHandler to send the request to proxy. This change works fine and should be the standar configuration in the future for Apache and php-fpm.
You can read the php developers discussion here http://www.serverphorums.com/read.php?7,956732 or some about problems fixed here http://blog.famillecollet.com/post/2014/03/28/PHP-FPM-and-HTTPD-2.4-improvement

Commits
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1873305 Update web_server_configuration.rst
41ac8c7 Update web_server_configuration.rst
71a24aa Update web_server_configuration.rst

cookbook/configuration/web_server_configuration.rst

@@ -132,8 +132,15 @@ directive to pass requests for PHP files to PHP FPM:
         #
         # SetEnvIfNoCase ^Authorization$ "(.+)" HTTP_AUTHORIZATION=$1
 
-        ProxyPassMatch ^/(.*\.php(/.*)?)$ fcgi://127.0.0.1:9000/var/www/project/web/$1
-
+        # For Apache 2.4.9 or higher
+        # Using SetHandler avoids issues with using ProxyPassMatch in combination 
+        # with mod_rewrite or mod_autoindex
+        <FilesMatch \.php$>
+            SetHandler proxy:fcgi://127.0.0.1:9000
+        </FilesMatch>
+        # If you use Apache version below 2.4.9 you must consider update or use this instead
+        # ProxyPassMatch ^/(.*\.php(/.*)?)$ fcgi://127.0.0.1:9000/var/www/project/web/$1
+        
         DocumentRoot /var/www/project/web
         <Directory /var/www/project/web>
             # enable the .htaccess rewrites