Optimize JSF templates included a lot of times

Some JSF templates are included a lot of times in a page, like label_template.xhtml, this can have an impact on perfs.

Also, TD's rendering statistics on AliasTagHandler diff at NXP-17370 could be interesting to track which templates take most time to render, except this code would be moved to a JSF lifecycle listener, to detect correctly start and end of the page rendering (to test).