Catalogs of entities

Provides views of latest publications, people, annotations, groups etc.

Note: existing views were refactored for more unified code, so the diffs are large in some cases, but insignificant (about, terms, privacy pages etc. due to removal of the unnecessary .simple class)
I think members count is quite interesting, to see the largest groups present. Same for collections. It's a way of exploring what's on peerlibrary. And I already put them in anyway. :)