Issue #3307163 by tedbow, TravisCarden: Add the ability to ProjectInfo handle projects not in the active codebase

Issue #3296261 by tedbow, phenaproxima, drumm: Add the ability to map package names to project names and vice-versa

Issue #3258059 by phenaproxima: Change ComposerUtility::getCorePackageNames to return an array of Package objects

Issue #3261847 by phenaproxima, tedbow: Add helpful methods to compute the difference between two ComposerUtility objects