OP-1603 Sliders are not updated fine. Still round / little slider value change but at least works now.
Merge branch 'rel-14.10' into laurent/OP-1603_Fixed_wing_elevon_mixers
OP-1605 Normalize Mixer values for all frames. Fix aileron mixing (wizard). Fix Vtail aileron mixing + Vtail mixing (config plugin)
Mixing values for sliders are now saved for Fixed Wing familly.
Merge remote-tracking branch 'origin/laurent/OP-1605_FWing_normalize_mixers_and_store_mix_values' into rel-14.10