Certain actions, such as looking into the editorial page, were
 possible to do by (possible) authors. All submission views
 related to the EdCol are now filtered by the get_pool filter in
 the SubmissionManager to exclude objects with the requesting user
 being a (possible) author.

This commit contains the removal of html from 'the important' models
 or at least contains replacements for model methods such as `print_as...()`,
 etc. etc. Except for `header_as_li`, methods are not completely deleted yet.

> Fixed/Improved the nested comments and comments in reports. They were
 not shown before.

> Improved DRY principle in several templates/codes.

> Created Managers in the `submissions` app to filter i.e. "pool" submissions
 (so exclude potential author from judging on his own publication) for the
 pool view in the query; not in the template!

> More...

The modal is replaced by a customized text block
 which does allow for hover and click action by
 the visitor to filter by specialization.

Renamed the EditorialCollegeFellow to Fellowship.
 Now shows specialization code on the about page and
 improved the queryset from 2*#(fellowships) calls to
 two db calls total.