[FEATURE] Default port to 5000.
[FEATURE] Strip down server.js to use new modules.
[CHORE] Remove unused test files.
[FEATURE] Extract controllers, models into separate files.
[FEATURE] Convert passport to use adapter.
[FEATURE] Extract database migrations to separate module.
[CHORE] Require gateway-express module dependency.
[CHORE] Remove lots of deprecated config files.
[CHORE] Update require paths.
[FEATURE] Rename workers "incoming" and "outgoing"
Merge pull request #19 from ripple/sz-modularize

[FEATURE] modularize