BUGS:
- On date change, response is overwritten by previous query, trimming needed according to numBytes
- Sanitize input on name/price change
- Handle disconnects properly
- Month headers on sale list
- Add robustness in case of invalid length
- Add landscape layout and inverted layout

TODO:

- Reimplement protocol with async pattern
- Incident class
- Incident parser
- A3 command
- Channels and codes to 2 ciphers

- Batch command files, definition, parsing and pushing them to the app
- Implement user auth. Server authenticates the app ONCE on install and allows to control ONE machine (key gets validated on server and then stored on app)
- Implement master key.
- App in background operations (scan and connect, if success get maintenance and sales data and send it)