Customizing the IdP UI via messages.properties

[Cantor, Scott]

> Can't be, that file is controlled by the user. But it's missing from the release
> notes, I will have to track down when we changed it. Nothing breaks that was
> working, it just prevents changes to the new files from taking effect.

Not missing, I found it under 3.3.0:

" A refactoring was done to merge the previously separate message property files in the messages directory into a single system-supplied message file with a single placeholder file for overriding individual messages. You may want to invest some time after upgrading to migrate to this layout to simplify future upgrades and to support installing translations (plus it's a lot simpler to see your own customizations this way). If you do make this change, remember that you need to update conf/services.xml to load the files you want it to load (you can see the new defaults in dist/conf/services.xml.dist).:

-- Scott