form styling fixes
Shift excerpts when asset moves

Front-end still needs to be taught about this.  Minor fixes to citation
choice and view button on spreadsheet.
Allow excerpts to be set on unpositioned assets

Maybe this should be allowed anytime an unpositioned asset is (un)selected
Shift excerpts on asset reposition at save

Really should be earlier, but better than nothing
Attempt to target auth request grant links better

See #2901
Warn on navigation away when uploads in progress

Untested
Add grant (really manage) button to affiliate's page

Fixes #2901
paste button
Merge branch 'master' of github:databrary/databrary
Allow pasting of deleted asset

Fix #2906