Switch to side-by-side view

--- a/Allura/development.ini
+++ b/Allura/development.ini
@@ -139,6 +139,7 @@
 scm.repos.tarball.enable = false
 scm.repos.tarball.root = /usr/share/nginx/www/
 scm.repos.tarball.url_prefix = http://localhost/
+scm.repos.tarball.zip_binary = /usr/bin/zip
 
 trovecategories.enableediting = true