Auth bug, beautify task info page & add started scheme for tasks

1. When using regexp of emails (more than one) to auth, like `--auth=test[12]@gmail.com` it fails, because the fixed part using comma-seperated strategy before.
2. Following is the showing effect after fixed,  it displayed badly for args's value cell before, because of its long line, but I forgot to capture it 囧
![_001](https://f.cloud.github.com/assets/1232624/517570/330676b6-bee2-11e2-8f2d-53eb29994d71.png)
3. Showing Started time for every task in tasks tab may be more useful.