* refactors team views * split views.py into users.py and teams.py in users app * refactors method headers for _user_has_permission() * adds method and class comments and documentation to base view classes
* refactors AbstractDeadlineViews (new, edit, remove) to inherit from BaseModalFormView * refactors KOM, OEK, EMA views for deadline views
* replaces function based views for deadlines with class based views
