Refactor collections/lingos.coffee

- Move /collections from inside /lib to project root folder because Microscope and Telescope do that
- Validation: there is not built in validation in meteor but there are a few options:
https://atmospherejs.com/?q=validation

That'd be overkill for now. parsleyjs may be the nicest because we can just declare it
in the DOM (similar to angularjs) http://parsleyjs.org/doc/index.html#psly-data-attrs