Fix load of UserVoice widget
Fix load of UserVoice widget - improvements post-review

Move suggestions to its own folder.
Remove accidentally-committed commented code.
Add comments to help explain code.
Prevent multiple copies of script being added to head.
Fix load of UserVoice widget -more improvements post-review

Give script an id for direct reference.
Improve comments.
Make unique reference key a variable.
Merge pull request #107 from andrew-polk/feature/UserVoiceWidget2

Fix load of UserVoice widget