1) drop unnecessary semicolon
2) start with <?php for extra security in the case that the server itself doesn't
have short_tags enabled (the app won't work, but we need to make sure that we're
still secure)
Each module now has a "module.info" file that has information about
the module, including the core. We can display the installed version,
and the version in the code.
Also take a first shot at a modules admin page.
path. This breaks a bunch of places where we had hardcoded
dependencies, so guard all of those cases. Restructure
module::available() a bit and the way that we do install/uninstall in
the scaffolding.
