[FIX] elfinder: Switch "pseudo vendor" library elFinder to use a new build based on github.com/jonnybradley/elFinder
Numerous fixes, including: refresh after extract operations, obey startRoot on different volumes, correct display of alerts and various others

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/11.x@46296 b456876b-0849-0410-b77d-98878d47e9d5