Respect newlines in conversation messages
Respect newlines in conversation messages

This uses `white-space` CSS property to break lines at newline
character.

An alternative is to actually convert newline characters to HTML tags,
for example, CMS uses Rails `simple_format` helper that converts one
newline character to `<br />` and double newline characters to a `<p>`.

eessex/force,joeyAghion/force,eessex/force,oxaudo/force,oxaudo/force,oxaudo/force,artsy/force,artsy/force,artsy/force-public,oxaudo/force,artsy/force-public,eessex/force,joeyAghion/force,joeyAghion/force,artsy/force,artsy/force,joeyAghion/force,eessex/force