[REF] tablesorter: prepare forum topic list for tablesorter, including moving moderator actions out of the table. Also seemed to have changed spaces into tabs.

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@53230 b456876b-0849-0410-b77d-98878d47e9d5
[REF] tablesorter: allow fro sorting by image title; turn off group subheadings for ajax tables until the formatting is better

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@53231 b456876b-0849-0410-b77d-98878d47e9d5
add more icon definitions

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@53232 b456876b-0849-0410-b77d-98878d47e9d5