Revert "UTS development changes: language-files updates for web interface"

This reverts commit 3e7fa0ae3b825fc37b52bc5633e61f6b4ca1a871.

The changes were committed before we'd made sure that they'd integrated
changes to these from HEAD - we hadn't.  Now winding back and starting again.
Correct changes to user interface from UTS, which incorporate changes made on
Intersect's main branch since we last upgraded.