Minor Demo Fixes

[ghost]

Fixed duplicate tag entries due to spacing in form field. Update social media button to retrieve saved value.

[andrei-cacio]

Thanks Emmanuel for the contribution. I do have something to add:

• in the post.tt view, you switched to listing all the tags but we want to list only the tags associated with the current post. If you could revisit your changes I would be happy to accept your pull request.

Thanks for your help!