Fixed issue 03927: Timer - survey breaks when moving to previous question, and previous question has expired timer with action 2
dev tested ok in current versions of safari, firefox, IE and chrome

git-svn-id: file:///Users/Shitiz/Downloads/lssvn/source/limesurvey@8006 b72ed6b6-b9f8-46b5-92b4-906544132732