Allow explicit titles for read-later entries
Link to url for read-later entries
Set up staging environment on Heroku
Update Gemfile and Gemfile.lock
Add secrets.yml to git history
Add staging env to new_relic.yml
Add default host to staging env
Add SendGrid details to staging env
Fix bugs with updating read-later entries
Prevent changing url or file on read-later entry
Fix bug with automatically setting tags