add missing files for Arduino Bridge
Add Stty tool
set GPIO24 to high by default
fix uart bug
add helloworld example
update to libmodbus 3.1.1
add mesh wifi support in GUI
Add VoIP FXS port support
Update to version 1.2.3
Add kmod-ath9k-htc as loadable module as requested
remove confict hotplug from dahdi
add fxs .config
Rename Image directory with firmware version display
add fxs module build support
add si3217x package header
Update mach-dragino2.c

Has to use mode 3 in AA1209
fix wifi client working bug
Merge branch 'master' of https://github.com/dragino/dragino2
fix gui configure bug
add sensor setting page draft.
update sensor support.
Download DL source from Dragino GitHub instead of using the default link.
Avoid lots of Broken links during compile.
add check net connection script
re organize Arduino folder, add avr sensor support and mcu type selection