<video> and x-sendfile

Using <object> and <embed> were forbidden for obvious
security reasons. Instiki now permits embedding video
via the HTML5 <video> element (Ogg/Theora encoded videos
only, with .ogg or .ogv extensions). You can even upload
videos with

    [[foo.ogg:video]]

Instiki now support x-sendfile. See the Proxying page for
configuring Apache (with the x-sendfile module). Lighttpd
should work similarly.

Update Rails to latest Edge (hopefully converging on RC2!).

app/controllers/application_controller.rb

@@ -48,6 +48,9 @@ class ApplicationController < ActionController::Base
     '.jpg' => 'image/jpeg',
     '.pdf' => 'application/pdf',
     '.png' => 'image/png',
+    '.oga' => 'audio/ogg',
+    '.ogg' => 'audio/ogg',
+    '.ogv' => 'video/ogg',    
     '.txt' => 'text/plain',
     '.tex' => 'text/plain',
     '.zip' => 'application/zip'
@@ -59,6 +62,8 @@ class ApplicationController < ActionController::Base
     'image/jpeg'               => 'inline',
     'application/pdf'          => 'inline',
     'image/png'                => 'inline',
+    'audio/ogg'                => 'inline',
+    'video/ogg'                => 'inline',
     'text/plain'               => 'inline',
     'application/zip'          => 'attachment'
   } unless defined? DISPOSITION
@@ -67,6 +72,7 @@ class ApplicationController < ActionController::Base
     original_options[:type] ||= (FILE_TYPES[File.extname(file_name)] or 'application/octet-stream')
     original_options[:disposition] ||= (DISPOSITION[original_options[:type]] or 'attachment')
     original_options[:stream] ||= false
+    original_options[:x_sendfile] = true if request.env.include?('HTTP_X_SENDFILE_TYPE')
     original_options
   end