DBArray's do not ser/deser to web UI

[nbauernfeind]

Sample query:

t = emptyTable(10).update("I = i%2", "J = i").by("I")

The displayed table is empty/broken:

I'd expect to see something like this:

[niloc132]

Not supported in enterprise either, but easier to support in OSS now, once we rebuild how js api subscriptions work. I'm lump this into #188, third section.

(that is, the server pre-chews this by calling toString() on it)

[nbauernfeind]

It's possible the real problem is that the schema must not be advertising the toString()'d aspect of the column. I noticed the same thing for a random Object column; which should be an easy fix then. (i.e. we should at least cheat for now)

[niloc132]

Yeah - we do want that too, but if DbArray or whatever shows up in the arrow payload as a array of int32s, it should be pretty easy as part of #188 to digest that and offer it to the user, even as a client-side tostring of the payload