Carriage return and new line

[dimoschi]

@matthewjackowski
According to a user, his articles include a carriage return and at the same time a new line after he uploads them to Transifex. I verified this in our test zendesk project (https://www.transifex.com/test-organization-4/zendesk-test/translate/#fr/articles-205686907/59148783)

[matthewjackowski]

I'll look into this as those characters shouldn't be added. However if they exist in Zendesk currently they will be copied over into the source. We could add an optional settings that could remove these characters if desired.