Detect duplicate tags on creation

If a tag already exists with the same text
(but different case), match that tag case
insensitively and return it.  Just to prevent
duplicate tags with the same content just
different case.
Remove debug console() statement
Migrate to new cleanup logic

When creating tags, multiple tags would be created on
multiple invocations of the TagFormView.  By using the
new removeView() function in utilities and invoking
cleanup before the next form view is rendered fixes
the issue and migrates to the updated cleanup logic.