Swap position of summary editor and featured image selector
Swap position of summary editor and featured image selector

In the "Story Info" workflow step, swap the positions of the
featured image selector and the summary editor so the featured
image selector is on the left, and the summary editor on the right.
This subtly mirrors the layout on a story's story detail page.

Addresses #579

denverfoundation/storybase,denverfoundation/storybase,denverfoundation/storybase,denverfoundation/storybase