Use tpl_favicon() instead of a static favicon (available since Angua)
Replace old template includes by tpl_includeFile

tpl_includeFile (available since Angua) allows the included files to be
in the configuration directory which allows template customization
without modifying the template itself which is ideal for farm setups.
Replace the "subscription" action by "subscribe"

Since the "Anteater" release the action name is subscribe. Even though
"subscription" should still work in fact the check if the action is
enabled doesn't work anymore which caused the button or link to be
displayed even if subscriptions were disabled.
Remove the closing "?>" in tpl_functions.php (might cause unwanted output)