Switch to side-by-side view

--- a/src/sampleconf/recoll.conf.in
+++ b/src/sampleconf/recoll.conf.in
@@ -113,6 +113,10 @@
 # piece into the preview window. Might be useful for big logs
 textfilepagekbs = -1
 
+# Maximum external filter execution time. Default 20mn. This is mainly
+# to avoid infinite loops in postscript files (loop.ps)
+filtermaxseconds = 1200
+
 # Length of abstracts we store while indexing. Longer will make for a
 # bigger db
 # idxabsmlen = 250