[NEW] Allow looking up of the ID of an item created via a profile from its profile reference for use in smarty templates

Really useful when developing custom smarty template that refer to items that are installed by profiles (to avoid hardcoded IDs that might vary from one system to another). See https://dev.tiki.org/Addons-Cleanup#Ability_to_avoid_unreliable_hardcoded_object_IDs_in_custom_Smarty_templates_and_wiki_page_content for more details.

@rjsmelo Please note.