Fix user role select

fixes #4800
- Correctly reference the user role for initial value

core/client/templates/settings/users/user.hbs

@@ -64,7 +64,7 @@
             <div class="form-group">
                 <label for="user-role">Role</label>
                 {{gh-role-selector
-                    initialValue=role
+                    initialValue=user.role
                     onChange="changeRole"
                     selectId="user-role"}}
                 <p>What permissions should this user have?</p>