Disabling the no argument feature since:
- It triggers with just "time"
- The time shown doesn't follow the person's timezone (which is preferable over UTC)
There's no need to have a different Goodie to handle the "no remainder"
query case, so we'll just combine both into this single Goodie.
Also makes the goodie slightly more resilient against bad inputs by
`eval`ing all the way up through the DateTime creation and string
gathering.
