add .htaccess file

.htaccess

+RewriteEngine On
+
+# support for old URLs
+RewriteRule ^(.*)/security-slider.html$ /$1/security-slider/ [R=302,L]
+RewriteRule ^security-slider.html$ /security-slider/ [R=302,L]
+
+# forward requests in /en to the root folder
+RewriteRule ^(en-US|en)$ / [R=302,L]
+RewriteRule ^(en-US|en)/(.*) /$1 [R=302,L]
+
+# Rewrites for languages that have a different mapping in the page
+RewriteRule ^(es-ES|es-MX|es-CO)$ /es [R=302,L]
+RewriteRule ^(es-ES|es-MX|es-CO)/(.*) /es/$2 [R=302,L]
+
+# Rewrites for languages that have a Tor Browser release
+# but don't have a translated manual
+# this languages are the priority for translation of the Tor Browser User Manual!
+RewriteRule ^(cs|da|fa|he|hu|is|ja|ko|nb-NO|nl|pl|sv-SE|vi|zh-TW)$ /$1 [R=302,L]
+RewriteRule ^(cs|da|fa|he|hu|is|ja|ko|nb-NO|nl|pl|sv-SE|vi|zh-TW)/(.*) /$2 [R=302,L]
+
+# we have only one translation for this locales
+RewriteRule ^bn-(BD|IN)$ /bn [R=302,L]
+RewriteRule ^bn-(BD|IN)/(.*) /bn/$1 [R=302,L]