Add more fields to "crab tasks" output

It would be helpful to allow `crab tasks` to supply more information than just the submission state. The server is looking at the tasks table [here](https://github.com/dmwm/CRABServer/blob/master/src/python/Databases/TaskDB/Oracle/Create.py#L34), and extracting `tm_task_status`, but there are other interesting columns like `tm_input_dataset`, `tm_user_sandbox`, and `tm_output_dataset` that would be good to have in the output as well.