Review trailing spaces in messages.properties

Just for my knowledge. What side effects will we see in the translations if we have a trailing whitespace. I know I have a single trailing whitespace in some messages because they get appended. And maybe I need to amend that so that if two messages are appended, they should be put in one single message instead of two. But that's not something I want to do on the fly, so it would be good to understand the problem a bit more - thanks.

Trailing spaces will not appear in translated properties files so we need to be mindful of whether those trailing spaces are required or not.