Use a filter for wp_title instead of hard-coding things in header.php

[kovshenin]

Let's try this again... Instead of hard-coding things like blog name, description and page number in the header.php template, use a simple call to wp_title() and make the rest in tweaks.php using the wp_title filter. This allows others to easily override the tag without having to parse the output from buffer. SEO plugins will love this.

For previous discussions see #33