Fixed the soundtrack issue that caused only the menu music to play!

Fixed a bug with Brave New World causing it to crash when spies were available. Should be good now!

Added Dawn of Man text and Civilopedia entries for Cordelia and her civ! Also edited icon paths to make sure they are compatible with everything.

No big content changes, but now it should be able to work in every version of Civ V. Hooray! Also added more special thanks and made the mod info less messy.