adaptivetheme 6.x-3.0-rc1

Release Candidate 1

AT3 is a major shift in focus from previous versions:

- subtheme now uses modular stylesheets, base.css is now a basic reset.
- views template overrides have been removed.
- theme settings have been simplified, based on our usage over the past year we now include many basic classes by default.
- admin theme styles revamped.

Many other changes - most of which will move forward to the D7 version (indeed many ideas have been backported from the D7 version).