* split secondary with a new boxes module
* fix box classes and reg ids naming
* finish #344281: adaptable latest blog box + proper rss subscription icon in ctxtoolbar
* cleanup primary views

fix #656178: dc_date of a blog entry should consider creation_date to behave nicely with rss aggregators

packaging fix: the views subpackage was missing. Backport new style data_files construction to avoid such error in the future