Store important metrics

[rgxai]

• How many tweets in total were fetched in the last 24 hours
• How many tweets were discarded
• How many cities + resource combos have empty data
• List of cities + resource combos with empty data
• How many API requests from the chatbot are we getting
• Average number of offsets (tries) before a helpful lead is found through our chatbot

[ms337]

1. For every fetch log # of tweets fetched.
2. Same for discarding + reason
3. Write a chron job to calculate this every 6 hrs. Use logic from Apoorv's script for now. See if it can be made efficient.
4. Save the ones found from above.
5. When api/contacts/* is hit, log event. If api/contacts/{location}/{resource}
6. When api/contacts/feedback, log event with the contact_id and the feedback_value.

[ms337]

Add metric for how many tweets were added.