Switch to side-by-side view

--- a/src/sampleconf/mimeview
+++ b/src/sampleconf/mimeview
@@ -17,7 +17,7 @@
 #  - For pages of CHM and EPUB documents where we can choose to open the 
 #    parent document instead of a temporary html file.
 xallexcepts = application/pdf application/postscript application/x-dvi \
-            text/html|gnuinfo text/html|chm text/html|epub
+ text/html|gnuinfo text/html|chm text/html|epub
 
 [view]
 # Pseudo entry used if the 'use desktop' preference is set in the GUI