Paper table error nit: Show error highlighting only on erroneous field.

Affected final-version upload; all documents had the same error
identifier (wrongly).
Whoops: Correct timeSubmited misspelling.
Improve final-copy upload UI.

Save changes is a better name for this button.

Fred Douglis report.
Use some Ht for buttons and entries.
Don't be a dope.
Changes to paper submission code.

This should have little observable effect (fingers crossed).
The code for handling a submission was a mess. This is less of
a mess.

* Save all non-erroneous changes on every upload attempt.
* Track what changed; if nothing changed, don't report.
* Simplify.