As part of the actions rework, I changed "Close -> Submitted" to

"Close -> Completed". The word submitted is pretty unique to Perforce,

and has been a source of confusion for users over the years, especially

since in some contexts we used the word "submitted" to mean "put up for

review".
This change fixes up other uses of the "Submitted" term, including in

the dashboard and the manual.
We still use "submitted" on the backend, including in webhook

notifications. This won't be changing because it's API.

Used the dashboard bulk mode and saw the correct wording.
Built the manual.