Added new question types ("!" and "W" and "Z") to relevant integrity checks prior to activation. (IE: Script checks that "!" type questions actually have answers, and "W" or "Z" type questions are linked to a labelset)

git-svn-id: file:///Users/Shitiz/Downloads/lssvn/trunk/unstable@1250 b72ed6b6-b9f8-46b5-92b4-906544132732