JBIDE-16978 - Update main template from latest version of community theme (part 2)
JBIDE-16982 - Remove old blog entries, support for draft articles

Removed old blog entries
Added a banner on articles whose date is post today
Added a link to old blog at bottom of all /blog pages
Added a message on /blog to handle the case where there's no published article yet
JBIDE-16657 - Handle case when cr == final in /downloads

Added a banner on the page with a link to the latest version download page
when there's a more recent version matching the current one (including 4.1.1.Final -> 4.1.2.Final)