Add FileSystemModuleTest

Add: The FileSystemModuleTest tests the file system os module.
Fix: Some bugs in the FileSystemModule class.
Environment variables as configuration entries

Add: Environment variables are just configuration entires and there's no longer an Environment object available. Processes store environment variables in a simple key-value-map.
Remove the last artifacts of toInfoString()

Remove: Some old artifacts of the InfoString interface which used to generate human-readable strings. We slowly filtered it out and now finally remove it because it doesn't fit well with MoCl/Classmod.
Some minor cleanup

Fix: Some very minor code style and javadoc issues.
Add PrimitiveUtil for wrapper null prevention

Add: The PrimitiveUtil class can be used to prevent a wrapped primitive value from being null without having to execute null checks on your own.
Add QuarterCode maven repository

Add: The QuarterCode maven repository is now available to the project object model.
Remove MoCl and add Classmod (no code changes yet)

Remove: All classes related to MoCl.
Add: Classmod as a dependency; the code will be changed to match the Classmod in the future.
Path SizeUtil to Classmod

Add: The SizeUtil API uses Classmod instead of MoCl.
File system to Classmod and small file test fix

Add: Everything in a .file package uses Classmod instead of MoCl.
Fix: A wrong assertion in the FileTest case.
Basic network classes to Classmod

Add: The basic network classes in the .world.comp.net package use Classmod instead of MoCl.
Fix: IP's TO_STRING method uses a StringBuilder to concatenate the four parts of the ip (performance improvement).