Switch to side-by-side view

--- a/tests/tar/tar.txt
+++ b/tests/tar/tar.txt
@@ -2,5 +2,5 @@
 text/plain	[file:///home/dockes/projets/fulltext/testrecoll/tar/tarfile.tar]	[tarfile.tar]	15	bytes	
 text/plain	[file:///home/dockes/projets/fulltext/testrecoll/tar/tarfile.tar.gz]	[tarfile.tar.gz]	15	bytes	
 text/plain	[file:///home/dockes/projets/fulltext/testrecoll/tar/tarfile.tgz]	[tarfile.tgz]	15	bytes	
+text/plain	[file:///home/dockes/projets/fulltext/testrecoll/tar/tarfile.tar.bz2]	[tarfile.tar.bz2]	15	bytes	
 text/plain	[file:///home/dockes/projets/fulltext/testrecoll/tar/tarfile.tbz]	[tarfile.tbz]	15	bytes	
-text/plain	[file:///home/dockes/projets/fulltext/testrecoll/tar/tarfile.tar.bz2]	[tarfile.tar.bz2]	15	bytes