Revert "allow suspension of notification of accepted runs via disabling the"

It has been dropped from the specification, and we want to keep the diff
as small as possible.

This reverts commit c30524daa66e669f0ce5d1e440eb2b0fe94fbc62.

Conflicts:

	sql/mysql_db_examples.sql
	www/jury/index.php
	www/jury/submission.php
Fix some unresolved conflicts in previous commit.
Correctly display negative contest relative time.
Merge branch 'ICPC-WF' into 'ICPC-live'.