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

SetupWizard : Updated Hexa, HexaC 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.