Fix Romanian language code

GNOME uses ro.po for Romanian, follow that to remain compatible
with damned-lies.
Add missing reference to solution
Fix in a better way redraws after resizing
Start with multiple angles supports

Everything is setup now to support multiple angles,
but the media player doesn't not support yet switching
angles or displaying many at the same time
Use Json.net OptIn serialization for Area
Use the current player to get frames when possible
Fix deletion of events with position tags
Add team selection for timers
Add support for images in dashboard buttons

Start with drawing the team shield for timer buttons
Handle multiple groups in the event types buttons