105 backend parse workflow

[mitchLui]

/workflow has working functionality now:

1. Run the site in your environment
2. Sign in
3. Go to /workflow
4. Enter tones and keywords
5. Click run

Everything should work now.

We can now decide on:

1. Whether to add search dates (we probably should)
2. Whether we should remove the workflow demo page since the workflow page now works

Also found a bug (#128), so we shouldn't merge this until it's been fixed.