Switch to side-by-side view

--- a/Allura/allura/lib/widgets/repo.py
+++ b/Allura/allura/lib/widgets/repo.py
@@ -80,9 +80,7 @@
     template='jinja:allura:templates/widgets/repo/commit_browser.html'
     defaults=dict(
         ew_core.Widget.defaults,
-        built_tree=None,
-        max_row=0,
-        next_column=0)
+    )
 
     def resources(self):
         yield ew.JSLink('js/commit_browser.js')