main.cpp:
-Bug Fix: Handle return code of connecttofs routine. If it is not successful the track is considered as finished. This avoids freezing the tonuino.
-Feature: Voltage Measurement averages over multiple analog reads, which is smoothing the voltage value
-Feature: When pressing the previous button during audio play and the current track is already played for more than 2s, the current track is started again instead of the previous track
This mode doubles the SD card speed (FTP upload speed ~350 kB/s compared to ~180 kB/s in SPI mode). Needs one PIN less but fixed PIN assignments
Add support for the PN5180 RFID reader:
PN5180 has better RFID range/sensitivity and can read ISO-15693 / iCode SLIX2 aka Tonies
* added a couple of JavaScript libraries
* added functions to main.cpp for file handling
* added websocket handller for index file notifications
* added webserver route for delivering file index
* refactored html notifications, introduced toastr