Twitter APIs update

[scientiststwin]

We need the changes in our Twitter APIs:

• [POST] (/api/v1/twitter/metrics/refresh)
  twitter_username should be removed from the API data

• [GET] (/api/v1/twitter/:twitterId/metrics/activity)
  twitterID should be removed from the query param and it should be retrieved from the DB

• [GET] (/api/v1/twitter/:twitterId/metrics/audience)
  twitterID should be removed from the query param and it should be retrieved from the DB

• [GET] (/api/v1/twitter/:twitterId/metrics/engagement)
  twitterID should be removed from the query param and it should be retrieved from the DB