fix extensions on browser download page

i2p2www/pages/global/nav.html

@@ -180,7 +180,6 @@
   <li><a href="{{ get_url('blog_index') }}"><div class="menuitem"><span>{{ _('Blog') }}</span></div></a></li>
   <li class="has-sub"><div class="menuitem"><span>{{ _('Labs') }}</span></div>
     <ul>
-      <!--<li><a href="{{ site_url('download/lab') }}"><div class="menuitem"><span>{{ _('I2P Labs') }}</span></div></a></li>-->
       <li><a href="{{ site_url('browser') }}"><div class="menuitem browseritem"><span>{{ _('I2P Browser (Beta)') }}</span></div></a></li>
     </ul>
   </li>

i2p2www/pages/site/browser/download.html

@@ -76,7 +76,7 @@
   {%- set version  = browser_version() -%}
   {%- set name     = 'Mac OS X' -%}
   {%- set icon     = 'images/download/mac-osx.png' -%}
-  {%- set filename = browser_filename('osx64','2.0',version,'en-US','.exe') -%}
+  {%- set filename = browser_filename('osx64','2.0',version,'en-US','.dmg') -%}
   {%- set hash     = '99b2a9b917fb8f66e192b4950116f63f6b386fe76f68d78b014ade2f05d18e7f' -%}
   {% call package_outer('mac-osx', name, icon) %}
   <div class="file">
@@ -102,7 +102,7 @@
   {%- set version  = browser_version() -%}
   {%- set name     = 'Linux' -%}
   {%- set icon     = 'images/download/freebsd-tux.png' -%}
-  {%- set filename = browser_filename('linux64','2.0',version,'en-US','.exe') -%}
+  {%- set filename = browser_filename('linux64','2.0',version,'en-US','.tar.gz') -%}
   {%- set hash     = '67664d298216450921c5c9638d2c6b9ce0c69aaeb2d177be23440d33e98fdbcf' -%}
   {% call package_outer('freebsd-tux', name, icon) %}
   <div class="file">