Code style, Drupal style coding, general cleanup

I did a general cleaning of page.tpl.php.
* Logic, even very simple, should be in template.php
* Use only one way of if-else, not three
*

is silly: you print an empty string if the string you want to print is empty. This if does the same as print $foo.
* Made code apply to Drupals spacing rules.
* Simplified many string concatanations and if structures, by rewriting them into or removing print '. $something .' structures. Sure, not the best-performing solution, but consistent, and very readable for developers (and dreamweaver).

Patch will follow.