- added in fitbitData an interface for keeping track of date
- removed annoying IOException, now will write a LOG
- same thing in sensor
- fixed main and adapted to new Database system
- Database now has Local or Remote (to implement)
- Now lights works with DialogFlow
- Database automatically update data from user's fitbit
- Doc is written well (well.. it is ok)
- Added logging here and there
- Removed unused code
- Improved code reading and code quality