moved data gathering for "$thissurvey" array into a function in common.php
added handling for saving / loading survey data
moved templatereplace($line) function into common.php so it is accessible from other scripts

git-svn-id: file:///Users/Shitiz/Downloads/lssvn/trunk/unstable@1147 b72ed6b6-b9f8-46b5-92b4-906544132732