Fix CSRF issues in svx form

Set date formats
Add DataIssue model and add errors to it to allow us to give people a list of
stuff to fix

core/views_logbooks.py

@@ -54,7 +54,7 @@ def personindex(request):
             if person.bisnotable():
                 notablepersons.append(person)
 
-    return render(request,'personindex.html', {'persons': persons, 'personss':personss, 'notablepersons':notablepersons, })
+    return render(request,'personindex.html', {'persons': persons, 'personss':personss, 'notablepersons':notablepersons})
 
 
 def expedition(request, expeditionname):