Issue 51 add user roles

For https://github.com/pulibrary/pul-store/issues/51. For actual testing of the interface you will need to be signed in with a user that has been mapped to the following groups that cover the standard hydra permissions for all PulStore projects and specific ones for lae.

```
all_project_discover:
lae_project_discover:
all_project_readers:
all_project_writers:
lae_project_readers:
lae_project_writers:
```

Right now the confing/role_map fixture files reference a joetest@univeristy.edu user account in all these groups.