Fixed bugs (sorry) -- (1)  was putting blog tagline into meta description field for blog homepages instead of the blog about text; (2) permalink pages of themes were missing the (Google) analytics tracking keys, (3) removed model.weblog.description calls in the themes and replaced with model.weblog.about or model.weblog.tagline depending on which was actually needed.

git-svn-id: https://svn.apache.org/repos/asf/roller/trunk@1618424 13f79535-47bb-0310-9956-ffa450edef68