Fixed list_requests view throwing access errors.
Fixed list_requests view throwing access errors.

The self.list call was checking access with unknown params, throwing exception bbecause the access type was unknown.

Fixes Issue 743.

MatthewWilkes/mw4068-packaging,MatthewWilkes/mw4068-packaging,MatthewWilkes/mw4068-packaging,MatthewWilkes/mw4068-packaging