BUGFIX: Modified editquestion code so that "Other" setting cannot be changed once survey is activated. This is important because having "Other" selected requires its own responses field, which is not possible after activating survey.

git-svn-id: file:///Users/Shitiz/Downloads/lssvn/trunk/unstable@1009 b72ed6b6-b9f8-46b5-92b4-906544132732