Sort timeseries on tabular view.

Having timeseries jump around every time you hit Execute is annoying.
Some ordering is required, so sort the timeseries. localCompare is
browser-dependant, but that's sufficient for this use case.

More powerful sorting/grouping options would be nice, this should cover most
use cases as a sane ordering like this is sufficient for eyeballing data.
Okay, the two options I see are either we remove those two functions or we're looking at doing this the other way.

sort and sort_desc are problematic as they require ordering to be maintained from expression results. If we want to keep that, we need ensure that all expressions evaluations produce some consistent ordering on their results, and add this into the formal language semantics and API we expose to users.

I generally think that presentation issues should be left to the presentation layer.