Make parent item information visible.
Fix for adding related items from another item.
Clean up relationship code.
Initial work on attribute permissions.

Permissions are role priority based. Upgrade scripts have not been
updated.
Move role permission check to user function.
Restrict advanced search attributes.
Restrict RSS feed attributes.
Add defaults for role and priority.

Default role is public access. Default priority is 0.
Add jQuery v2.0.3 minified library.
Add AJAX call to filter list of possible parents.
Update upgrade SQL.
Merge remote-tracking branch 'origin/attribute-permissions'
Merge branch 'parent-item-visibility'