updating existing dataset refresh/usability

[donsizemore]

Nick Lauland of TDL reports:

The page says "Close this window and refresh your dataset page to see the uploaded files", but this is only if you are adding to a draft. If you add to an already published dataset, a new draft is created, but the browser page still shows the published version and we've had some confused users.

Perhaps a version check on the dataset, to determine whether to append &version=DRAFT?

[donsizemore]

Just verified this on 5.14:

Then, when I close the tab to return to the extant dataset, the only way to graphically navigate to the created DRAFT version is by way of the "Versions" tab.

[qqmyers]

Improved/fixed in #36