Additional check for allowed file extensions 


git-svn-id: http://svn.montala.net/svn/resourcespace@4488 c08608d7-6e46-0410-86ca-f2a6f1370df5
Attempt to fix issue with missing next/prev links when a blank search is performed (currently differs between simple and advanced search)


git-svn-id: http://svn.montala.net/svn/resourcespace@4489 c08608d7-6e46-0410-86ca-f2a6f1370df5