Fixes #1875 and #1849: implemented LCD initialization for low temperatures. Initialization skipped in case of watchdog reset or boot-loader exit.
Re #1875 and #1849: the delay for Taranis Plus reduced to 300ms
Update DONATIONS.txt
Fixes #1905
Fixes #1903
Merge pull request #1877 from opentx/projectkk2glider/issue1875_lcd_low_temp

Fixes #1875 and #1849: implemented LCD initialization for low temperatures
MAVLINK adaptation for Sky9x and 9XRPRO - Closes #1895
2.0.14 preparation
More diagnostic menu to discover high packets drop
4800 baud -> 2 pck drop every 3
9600 baud half packet drop
Fixes #1908
Update DONATIONS.txt
Merge remote-tracking branch 'upstream/master'

Conflicts:
	radio/src/gui/view_mavlink.cpp
	radio/src/myeeprom.h
	radio/src/targets/sky9x/board_sky9x.h
	radio/src/targets/sky9x/second_serial_driver.cpp
9X and 9XR128 compatibility
testing the use of makefile instead of Makefile
to syncronize easily again master project
Logs for MAVLINK
Start of MAVLINK menu optimization
Compilation of companion9x
with MAVLINK: simulator works