Review trailing spaces in messages.properties

I've removed all trailing spaces from messages.properties per request. Fixed by http://mifosforge.jira.com/browse/MIFOS-4066.

Thanks. Do mind though that trailing spaces are usually a sign that patchwork messages are in play, and that this may have caused spacing/word separation issues if done bluntly.

I've gone through each message identified above to ensure that it is safe to remove trailing spaces.