Switch to side-by-side view

--- a/src/windows/mimeconf
+++ b/src/windows/mimeconf
@@ -81,6 +81,7 @@
 
 application/vnd.wordperfect = exec wpd/wpd2html;mimetype=text/html
 application/x-abiword = execm python rclabw.py
+text/x-fictionbook = execm python rclfb2.py
 
 application/vnd.openxmlformats-officedocument.wordprocessingml.document = \
  execm python rclopxml.py