Refactoring: reuse of NSString+Packages method to append suffix.
Observer testing helper added to reduce repetitive code.
Removed warning for NSAlert not using string format.
Refactoring: Removed importMethod with single path param. Covered by other import method.
Method added to generate full path package names.
Refactoring: Renamed package category method's name.
Renamed a method in resource manager outline handler.
Documentation added to two methods in project settings.
Package controller creating packages with intermediate folders.
Necessary for next step to import packages to packages/ folder.
PackageController tests simplified by using ProjectSettings instead of a mock.
Rewritten importPackageWithName test, a partial mock was causing problems.
PackageCreateDelegateProtocol: Removed not used methods, left the ones used by NewPackageWindowController.
Merge branch 'feature/#501_packages_step_one' into feature/#501_3_package_folder
Refactoring: Split PackageController tests into different areas.
First step to split up the PackageController implementation.
Refactoring: Split PackageController into concrete Package operation classes.
PackageController is gone.
Warnings removed.
Wrong parameter type for -tryToExportPackage.
String format not used properly for NSAlert.
NSOpenPanel now with the right panel class.
Refactoring for PackageUtil method.
Name should be clearer now.
Notification logic inlined, not needed in util method: More explicit control.
Package importing behaviour changed.
Invalid paths witll now generate a SBPathWithoutPackage or SBInvalidPackagePaths error if nothing provided or paths without .PACKAGE_NAME_SUFFIX.
Merge branch 'feature/#501_packages_step_one' into feature/#501_3_package_folder

Conflicts:
	SpriteBuilder/SpriteBuilder.xcodeproj/project.pbxproj
ProjectSettings packages category with a test now.
Some documentation added.
Package import will copy package to packages folder within project.
Renamed a vague error name.
RMPackage tests reusing NSString+Packages methods.
Package creation dialogue fixed since splitting up PackageController.
Package creation works now with existing paths, just importing the package.
PackageCreateDelegateProtocol no longer needed.
Extracted view logic of PackageCreator to AppDelegate.