Fixes #1205
Merge branch 'next' of https://github.com/blackberry/GamePlay into next
Removed VisibleSetDefault.cpp/.h and made Scene implement a default VisibleSet
Added support for Node activate as a replacement for visibility.
Merge branch 'next' of https://github.com/blackberry/GamePlay into next
Merge pull request #1256 from seanpaultaylor/next

Next
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
Removed old files.
Merge pull request #1257 from seanpaultaylor/next

Removed old files from Linux and Android build files.
Merge branch 'next' of https://github.com/blackberry/GamePlay into next
Updated project files and install script
Merge pull request #1258 from seanpaultaylor/next

Updated project files and install script
Merge branch 'next' of https://github.com/blackberry/GamePlay into next
Fixed broken samples.
Merge pull request #1259 from seanpaultaylor/next

Fixed broken samples.
Merge branch 'next' of https://github.com/blackberry/GamePlay into next
Added back static Scene::getScene to access active current scenes from script.
Merge pull request #1261 from seanpaultaylor/next

Added back static Scene::getScene to access active current scenes from s...
Merge branch 'next' of https://github.com/blackberry/GamePlay into next
Disable/Enable collision objects based on node active state.