updating master template links

From https://en.wikipedia.org/wiki/Favicon, determined the best order for all major browsers to link
the favicon both in .ico and .png format (image/png uses compression and supports alpha transparency).

include/template.inc:
  * Adding the RSS feed as a link for easy feed discovery
  * Using the $root variable instead of ".." for icon href
  * Firefox+Safari will pick the last icon, IE the first, hence doubled
  * type="image/x-icon" works for IE (and all other Browsers)