Major rewrite and refactor. Fixes #7, fixes #8 and fixes #12.

- Can't trigger new sounds when in help mode (#12)
- Major refactor of code: way more readable, much sorter and cleaner
  too. (#7)
- Local and Banco now share most of the code instead of being duplicated
  on both sides (#8)
- Sounds renamed for clarity and in bin/sounds/ folder instead of in
  bin/
- Improved location of the data points, some were not really in place