Use Pyramid 1.5-style __acl__ callables
Remove unused metaprogramming nonsense

I had added this at some point becaues I thought it was super cool
to take the class name and use it as the form id so that forms
would have unique id attributes. Probably I was stoned and looking
for an excuse to use a metaclass. :foggy:
Use symbolic names in pylint pragrams

- Add some selective ignores
- Remove a disable that seems to do nothing on Store.
  Known bug: http://www.logilab.org/ticket/111138