Renamed config.php -> config_example.php

- This way pulling from the repo doesn't cause merge conflicts with config.php
- config.php is now also part of the .gitignore as it can contain sensitive login data.
  The data currently held in it is not sensitive as it's only used on a single development machine
  that allows localhost connections only.
Fixed missing superscripts for languages

- Language:getKey now appends the superscript status if the shortName alone is not enough.
- Closes #4