Bump version to 504
Bump version to 504

Version Code: 504
Version Name: 5.0 (Beta 2)

Change-Id: Icd95e055a995d5cdbb356fc71a21f130d644f3f8

WeRockStar/iosched,jarekankowski/iosched,WeRockStar/iosched,jarekankowski/iosched,jarekankowski/iosched,WeRockStar/iosched