Display tags while inputting new post

When using the input field for tags the should appear in the UI so the user is sure they have been recognised correctly and will post with the article.

see - https://steemit.com/utopian-io/@sambillingham/goodbook-reviews-beta-now-live-v0-2-0#@carn/re-sambillingham-goodbook-reviews-beta-now-live-v0-2-0-20180420t183624894z