Fix number of followers/following/tweets for twitter accounts having more than 1k users

For twitter accounts having more than 1k followers/following/tweets the current implementation do not strip the comma from the number (but the dot separator). However, some accounts (at least our :) ) have the "thousands separator" using comma. See https://www.diigo.com/item/image/42art/ae8j as an example.

The current PR should strip both dot and comma.