Feature: #66173 - Allow page title edit by doubleclick 

See forge#66173

Description 

A user can edit the page title in the "Page" and the "List" module by double-clicking the page header.

Impact 

If a user has sufficient permissions, the page title will become a text field after double-clicking on it. Pressing the "escape" key aborts the edit, pressing "enter" submits the changes.