Bugfixes:
* Loading packages did not take effect before startScene was called on iOS.
* Saving packages on iOS was triggerd in the wrong place. Packages now saved when app enter background.
* Packages default insallation folder now working for mac targets.
CCPackageManager.m added to mac target compile sources build phase.
Package lifecycle events for Android.
Removal of old installData references. Would not compile with log level set to info.
Merge pull request #1063 from NickyWeber/bugfix/packages_saving_and_loading_mac

Bugfixes for packages