Update twitter auth callback endpoint to use POST not GET
Update twitter auth callback endpoint to use POST not GET

Satellizer.js auth library changed the OAuth1 callback to POST
to be consistent with OAuth2.

See https://github.com/sahat/satellizer/issues/504

skob/alerta,skob/alerta,skob/alerta,skob/alerta,guardian/alerta,guardian/alerta,guardian/alerta,guardian/alerta