The Page Like UI is not following the common template style for a page

It should follow the style used by all viewers. Some examples:

• https://playground.xwiki.org/xwiki/bin/view/Main/?viewer=code
• https://playground.xwiki.org/xwiki/bin/view/Main/?viewer=children
• https://playground.xwiki.org/xwiki/bin/view/Main/?viewer=comments
• etc

Namely the issues are:

• Missing the "last modified" line + HR rule below
• Missing the content menu
• Missing a link on the current page name in the title