Merge pull request #13 from ministryofjustice/add-community-field

Add community field
Pin rubocop to a sane version. 

- upgrading to 0.27.1 raised some dubious errors.
Removing unused view
Fix the Person#tag_list method so it actually works

This could be improved, e.g.:
- storing the tag_list as an array datatype
- storing tags in a related table