Added scope info when presenting tokens

In my opinion there is lack of important information when someone types:
binstar -t ${TOKEN} auth -l

The patch modifies the output to be something like this:
```
ID                        | Application                         | Remote Addr          | Host                      | Expires In      | Scopes                   
--------------------------+-------------------------------------+----------------------+---------------------------+-----------------+--------------------------
XXXXXXXXXXXXXXXXXXXXXXXX  | binstar_token:localhost.localdomain | XX.XXX.XXX.XXX       | localhost.localdomain     | 294 days        | api                      
                          |                                     |                      |                           |                 | api:build                
                          |                                     |                      |                           |                 | api:modify-collection    
                          |                                     |                      |                           |                 | api:modify-group         
                          |                                     |                      |                           |                 | api:publish              
                          |                                     |                      |                           |                 | api:read                 
                          |                                     |                      |                           |                 | api:write                
XXXXXXXXXXXXXXXXXXXXXXXX  | fullaccess                          | XX.X.XXX.XX          | localhost.localdomain     | 364 days        | all                      
                          |                                     |                      |                           |                 | api:build                
                          |                                     |                      |                           |                 | api:modify-collection    
                          |                                     |                      |                           |                 | api:modify-group         
                          |                                     |                      |                           |                 | api:publish              
                          |                                     |                      |                           |                 | api:read                 
                          |                                     |                      |                           |                 | api:write                
                          |                                     |                      |                           |                 | conda:download           
                          |                                     |                      |                           |                 | pypi:download            
                          |                                     |                      |                           |                 | pypi:upload              
                          |                                     |                      |                           |                 | r:download               
                          |                                     |                      |                           |                 | r:user                   
                          |                                     |                      |                           |                 | repos:collections        
                          |                                     |                      |                           |                 | repos:user               
```