`influx query` formatted output difficult to read on narrow screens

[danxmoran]

We set minimum widths for each column in formatted query outputs. Those minimums are currently hard-coded (#87 copied the old values from influxdb, and added some more). On narrow screens, the minimums can cause unnecessary wrapping of output rows, making it very difficult to read the results.

It'd be nice if minimum widths could vary based on the size of the terminal running the command. If that's not possible, we may want to consider lowering the minimums.