CHG - added extra field "hide" to specify if comment should be hidden as against policy


git-svn-id: http://svn.montala.net/svn/resourcespace@4697 c08608d7-6e46-0410-86ca-f2a6f1370df5
BUG - comments-policy -> comments_policy in $lang['comments_box-policy-placeholder']

git-svn-id: http://svn.montala.net/svn/resourcespace@4698 c08608d7-6e46-0410-86ca-f2a6f1370df5
CHG - better handling of default policy messages 

git-svn-id: http://svn.montala.net/svn/resourcespace@4699 c08608d7-6e46-0410-86ca-f2a6f1370df5
CHG - Implement hiding of comments which have hide=1 in table indicating that comment has been "removed"

git-svn-id: http://svn.montala.net/svn/resourcespace@4700 c08608d7-6e46-0410-86ca-f2a6f1370df5