Revert "Add custom formatting option to listpages"

(page.title is a method, not an attribute with basestring representation like page.site for example)

This reverts commit 53e64b500a80c0a8acca7a594286b7a0a00d5494.

Change-Id: I2405e7b3de4f8ffbb7c12070409f35c1105befca
Merge "Revert "Add custom formatting option to listpages""