OP-1063 Multi_config_Hexa_fixes  Svg file : Added HexaX_reverse and fixed gradients

SetupWizard : Updated Hexa, HexaX and HexaH default values, default
Throttle curve at 90% max
Fixed a previous bug sign in HexaH (and HexaX because previously copied)
: Bug was in M4 Roll and M6 Yaw.
OP-1063_Multi_config_Hexa_fixes Added OctoX Svg
Merge branches 'laurent/OP-1063_Multi_config_Hexa_fixes' and 'laurent/OP-1063_Multi_config_Hexa_fixes' of ssh://git.openpilot.org/OpenPilot into laurent/OP-1063_Multi_config_Hexa_fixes

Added Svg OctoX frame
OP-1063 Multi_config_Hexa_fixes Added OctoX, define new mixer table for Octo(p) and OctoX. New motor definition for OctoX (NNE, ENE...) Fixes for svg frames. Defined default settings for OctoP/X in setupwizard (but disabled)