GCS/Wizard don't hide while waiting for disconnect

Fixes #1332
GCS/Wizard biascalibration page, fix bug with wrong slot connection

Fixes #1333
GCS/Wizard biascalibration fix segfault if wizard rerun after calibration
Merge pull request #1334 from guilhermito/wiz_fix

Wizard bug fixes
ChibiOS: Pristine import of v2.6.6
ChibiOS: fix GPIOv2 conflict with st libs GPIO_TypeDef
ChibiOS: remove CMSIS arm_math.h to prevent conflict
ChibiOS: disable stm32f30x usb irq relocation for legacy compatibility
pios_semaphore: fix mismatched comment
pios_semaphore: add ChibiOS implementation
pios_semaphore: fix simulation exception
pios_mutex: add ChibiOS implementation
pios_thread: add ChibiOS implementation
pios_queue: add ChibiOS implementation
pios_com: add support for ChibiOS
pios/common: add support for ChibiOS
GenericI2CSensor/i2c_vm: add support for ChibiOS
System: add support for ChibiOS
pios/stm32f4xx: add pios_chibios_transition_priv.h
pios/stm32f4xx: add support for ChibiOS