[cs615asa] ctf updates

[Jan Schaumann]

Team Lego has completed Level 2.

Team AlphaGo was the first to complete Level 3.

Team Soga has completed level 3.

Teams Alien and Zappy submitted wrong answers for Level 3.

Team Chunky Healer submitted a wrong answer for Level 3 after one of the
teams which had correctly completed this level deployed a decoy answer.
(Nice going to the team who did this.  I've mostly reset things.)

New rule: three wrong tries and you miss the level.