link plugin to tinymce editor cfg
message collects links through a tag (was through regex)
link doesn't require a format (non href anchor tags are counted)
updated specs to work
only display error element when error exists for field
messages uses nokogiris css method to select all links regardless of parent
updates factory and specss
Merge pull request #15 from rob-lane/bug/link-control

Link control to TinyMCE editor