Slice Column Selector should be same input modal from View Column Selector

[MultiTech]

I think we can all agree: the new column selector modal for views is amazing. 

• It makes short work of what would otherwise be tedious work.

Now that we have this easier interface... whenever I find the old ones, the friction really shows.

• The whole one-by-one thing is really rough.

I'm sure this is in the pipeline, but I just wanted to throw a little more gas in the fire - see if we can't get that over there a little faster? 😉 

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Cheers; and as always, thanks for considering!