Jc/more stuff

# Overview

- ```@Jacques last fb```: gives the latest post on the PINCHme fb page
- ```@Jacques last tweet```: gives the latest tweet with our hashtag #pinchermoments
- ```@Jacques wishlist breakdown```: generates a csv file with the wishlist breakdown and sends it to the email of the person who asks (Jacques can now send email, yay)
- ```@Jacques users promo x```: generates a csv file with the list of users who ordered promo x and sends it via email
- ```@Jacques current users```: returns an approximation of the number of current users signed in (which is actually the number of distinct sessions in the last 5 min)