Switch to side-by-side view

--- a/Allura/allura/templates/repo/admin_extensions.html
+++ b/Allura/allura/templates/repo/admin_extensions.html
@@ -1,6 +1,6 @@
 <form>
-  <label class="grid-4">Extensions:</label>
-  <div class="grid-9">
+  <label class="grid-13">Extensions:</label>
+  <div class="grid-13">
     {% if allow_config %}
       <input type="text" name="additional_viewable_extensions"
              id="additional_viewable_extensions" title="e.g., .svnignore,.gitignore,.ini"