Changed Bundle, Font, Properties and SceneLoader to use GP_WARN instead of GP_ERROR.
Create methods will return NULL if there is an error instead of asserting.
Merge branch 'next' of https://github.com/blackberry/GamePlay into next
Merge branch 'next' of https://github.com/blackberry/GamePlay into next
Merge branch 'next' of https://github.com/blackberry/GamePlay into next
Merge branch 'next' of https://github.com/blackberry/GamePlay into next
Merge branch 'next' of https://github.com/blackberry/GamePlay into next
Merge branch 'next' of https://github.com/blackberry/GamePlay into next
Merge pull request #1264 from dgough/next

Changed Bundle, Font, Properties and SceneLoader to use GP_WARN instead of GP_ERROR