Refactored DB:
- only one table for stations: added field type
- only one table for sessions: type of session is recovered from stations types
- added table log: has multiple log levels
NOTE: SPLIT THAT COMMIT
Added new functions for db in central server
Implemented packet handler.
Cleaned DCPServerCentral of useless functions.
Cleaned DCPServerCentral functions (refactor, fix problems).
Added command Log to send logs to central station.
Added command log to packet factory.
Added function addNewLog to central station to add log to DB.
Implemented handleCommandLog for central station.
Merge branch 'newdb2'
NewDb2 implements the new db architecture:
- only one table for stations
- only one table for sessions
- only one table for logs