Contestproblem shortname is not available on problem page.
Sort user list by username, not the invisible userid
Fix submit commandline parsing for the -c parameter
Add join on contestproblem in calcTeamRank
Truncate output fields when retrieving from the database.

Saves a lot of data transfer both on output and between web and DB.
A submission already belongs to a specific contest.
Merge branch 'master' into ICPC-live

Conflicts resolved:
	submit/submit.cc