Bug in Mixer when offset used with a switch + slow down

GPS displayed as ---- when there has no fixed received since beginning
No Custom telemetry screen displayed when nothing to display
Marks at -100 and +100 when editing a value
RSSI alarms 1 + 2 labels were wrong
ANAS menu redesigned
60 models on ersky9x board
Current calibration on ersky9x board

src/o9xstrings.cpp

@@ -293,6 +293,8 @@ const pm_char STR_SHUTDOWN[] PROGMEM = TR_SHUTDOWN;
 #endif
 
 #if defined(PCBARM)
+const pm_char STR_BATT_CALIB[] PROGMEM = TR_BATT_CALIB;
+const pm_char STR_CURRENT_CALIB[] PROGMEM = TR_CURRENT_CALIB;
 const pm_char STR_CURRENT[] PROGMEM = TR_CURRENT;
 #endif