Add a user guide on payments

src/pretix/control/views/help.py

@@ -1,27 +0,0 @@
-from django import template
-from django.http import Http404
-from django.shortcuts import render
-from django.views.generic import View
-
-from pretix.base.models import Organizer
-
-
-class HelpView(View):
-    model = Organizer
-    context_object_name = 'organizers'
-    template_name = 'pretixcontrol/organizers/index.html'
-    paginate_by = 30
-
-    def get(self, request, *args, **kwargs):
-        # In a security review, this came up as a possible path traversal issue. However, the URL regex
-        # does not allow any dots in the argument (which forbids traversing upwards in the directory tree).
-        # Even if it *was* possbile, it'd be loaded through django's template loader and therefore limited
-        # to TEMPLATE_DIR.
-        try:
-            locale = request.LANGUAGE_CODE
-            return render(request, 'pretixcontrol/help/%s.%s.html' % (kwargs.get('topic'), locale), {})
-        except template.TemplateDoesNotExist:
-            try:
-                return render(request, 'pretixcontrol/help/%s.html' % kwargs.get('topic'), {})
-            except template.TemplateDoesNotExist:
-                raise Http404('')