Bugfixes:
* Addressed issue #1418848: Default Protected Download Settings by implementing hook_node_insert so that wpd information of programmatically created nodes will get saved, useful in combination with modules like node_clone
* Fixes issue #1239916: "You need to attach private files to this webform"
* Correct display of attached private files that are not protected if multiple files have been uploaded
* Support for field type image as a protectable field type
* Correct check for a webform node type on the node edit form