[MOD] elfinder: Add extended elFinder class tikiElFinder in preparation for adding tiki filegal info to the info box
 Includes pristine version of elFinder command 'info' that needs overriding for diff purposes, more to come...

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@47230 b456876b-0849-0410-b77d-98878d47e9d5