Play more music tracks.

Register the new track "Tale Of Warriors" from rP19887 with the game.
Register "Calm Before the Storm" and "Tavern in the Mist", which were not heard in the previous releases.
Play some peace tracks for all civilizations, as intended by Omri (thus play some music for observers too, refs #4298).
Add more background tracks to the menu as agreed with WhiteTreePaladin.
Keep "Honor Bound" the first one, as proposed by Itms and leper.
Add some tracks that are played only for one civ to other civs, to reduce the repetition.
Remove duplicate, now unused music code.

Differential Revision: https://code.wildfiregames.com/D732
Fixes #4565.