Optimization for how new keywords are added in dynamic keyword field

git-svn-id: http://svn.resourcespace.org/svn/resourcespace@4572 c08608d7-6e46-0410-86ca-f2a6f1370df5
Added ability to shift+click on search results to allow multiple resources to be added. Requires $use_checkboxes_for_selection to be set


git-svn-id: http://svn.resourcespace.org/svn/resourcespace@4573 c08608d7-6e46-0410-86ca-f2a6f1370df5
Initial commit
Merge branch 'master' of github.com:rzamana/resourcespace