small refactoring and pep8 fixes on savjet app
small linter fixes on the search app
small refactorings and pep8 fixes on the subpages app
removed unused zivpdf app
fixed error prone subpages view
added fixtures for subpages
fixed deprecation warnings in urls
members app refactoring

Did a little bit of refactoring and pep8 on the members app.
Still a long way to go. It's a mess.