Bugfix - ensure question attributes are db->escaped() on insert/update
New Feature - auto-generate Relevance Equation from Conditions when save question
Upgrade Feature - improved tooltips in EM - For each variable, now shows the question, value, and either the SGQA code (if use Question-code-based naming), or Question Code (if using SGQA codes)
Dev ToDo - (a) convert all conditions to relevance on load, (b) auto-generate relevance from conditions all other times that conditions change.

git-svn-id: file:///Users/Shitiz/Downloads/lssvn/source/limesurvey_ci@11098 b72ed6b6-b9f8-46b5-92b4-906544132732