Fix physical template detection for symlinked pages

In-Portal has 2 types of sections/categories in "Structure & Data" section:

• physical - sections, that have 1 template on disk (TPL file) connected to them
• virtual - sections, that share single template (design template) with other sections (pure CMS pages, that just have different content, but identical layout)

Because of that physical sections actually have 2 urls:

• one, that matches TPL file location inside a theme
• other, that match associated section location inside "Structure & Data" section

If developer is required to perform specific actions based on physical template being used to render a page then method kApplication::getPhysicalTemplate can be used.

However I've recently found out, that virtual section has a symlink to a physical section this method sometimes failed to properly detect actual TPL file being used.