Replace the broadcast background gradient with a flat color (closes #2793).
Fix font size of broadcast still getting smaller when more than 3 lines are specified, even thou only a maximum of 3 lines are ever shown. Now anything beyond and including the third \n will be ignored.
I chose not to check for and ignore empty lines. It's the server modder's responsibility to print newlines only where desired.
If this was a poor-mans solution to getting a smaller broadcast before the b...
