Issue 19 solved

Revert the last Haptic changes (was unfinished, no more spare time during the week-end, sorry!)
Revert my last modification on main views (offset not displayed in Bar Graphs, I was wrong)
PPM Center now configurable for each servo
No mean on the Batt voltage when in the calibration menu to have a faster response when calibrating
SD card Backup / Restore Models feature started
Some french translations fixed

src/open9x.h

@@ -812,11 +812,6 @@ extern uint16_t jeti_keys;
 #include "beeper.h"
 #endif
 
-#if defined(HAPTIC)
-#include "haptic.h"
-#endif
-
-
 #ifdef LOGS
 #include "logs.h"
 #endif