Update issue #54 : Add favorite and blacklisted checked/unchecked menu item for filter context menu.
Lookup uses cache of all registered filters/DMOs generated on first use and cleared by pressing F5 in filters dialog.
Show error messages for failed pin rendering

git-svn-id: http://graph-studio-next.googlecode.com/svn/trunk@171 c2f33eb2-41b2-391d-4cb4-d9d0608729ba