Add a non-annoying message overlay for notifications.
Add "global drawables" that survive a scene change.
Pending: output not working correct for errors. SdlUi Display Api needs changes.
Fix output branch after rebase to shared_ptr
Get rid of screen output in Ui class. Output will do this now completly in the feature.
compile fix
Add output for Info and Warning
Shorten audio warning text
Change output style
Use message_max in AddMessage
Fix font rendering (without system) in shinonome