Tick tock

Implemented proper clock using NTP, including automatic DST switching.
General code cleanup (if you can call it that).

Hopefully final v1.0.

• Fixed multiple overflows/cleanup issues
• Optimized wlan connection handling
• Added error message when downloaded data is corrupted or incomplete

Hopefully (?) final working revision for current feature set

0.9999

Fixed clearing of existing areas before redrawing text