pages' title should be resources' titles

Currently the title of the page is, most of the time, the page-name and not, as it should, the display-title (e.g. the resource title).

So for example the profile-page of a user has title "Curriki - Profile" whereas it should be "Curriki - firstName lastName".

This might have been a regression of the velocity scope-changes in XWiki 3.5 switch.