Dark splash images with fade to pic of day and logo animation.

The logo rises up from it's central splash page location. The pic of the day fades into view instead of just popping.
Animated the reveal of the Getting Started pages.

Nice as it allows the splash logo animation from this branch to actually be seen. Also good symmetry to match animation which happens when Getting Started is dismissed.
Cleaned up pic of day attribution logic.

The flag being used to determine whether the pic of day attribution was visible was being handled in a wonky manner. Also, based on this commit, no longer needed "app did resume notification" code was removed. Also, down swipe when viewing attribution now dismisses it.
Merge pull request #98 from montehurd/splashUpdate

Dark splash images with fade to pic of day and logo animation.