The contact link on the settings page should be truncated instead of the
text being wrapped and overflowing on to multiple lines. This adds in an
option to the text_field macro to truncate long text fields. This
setting has been used to truncate the API callback URLs too on the
services/<service_id>/api/callbacks page.
Delivery comes before inbound. The order of the URLs was jumbled in two
places:
- in the view function
- in the Jinja template
So as the user saw it the URLs were in the right order, because the
double jumbling cancelled itself out. But it made the code _really_
confusing to read.
