Add EEPROM version Check
Update embedded page content and build process
Move check sum ESP commands from ESP6XX to ESP5XX to let Notifications use ESP6XX
Update command.txt with latest commands
Add 2 new [ESPXXX] command as check sum helper
* Send GCode with check sum caching right line numbering
[ESP600]<gcode>
* Send line checksum
[ESP601]<line>
Implemented only for Sync WebServer at this moment, so Async is disabled in Travis