BUG fix for video resourcetype icons

git-svn-id: http://svn.montala.net/svn/resourcespace@4701 c08608d7-6e46-0410-86ca-f2a6f1370df5
ADD $resource_type_icons config option (false by default) to add icons for all standard resource types for thumbs

git-svn-id: http://svn.montala.net/svn/resourcespace@4702 c08608d7-6e46-0410-86ca-f2a6f1370df5