Locallab cleanup #1

Cleanup of Locallab and ControlSpotPanel
Removed also useless LocalListener, useless Locallab options

The following improvments have been introduced:
- All Locallab events are now managed with regular RT logics

The following bugs have been corrected:
- Missing "sensiexclu", "struc" (hidden) and "noisechrodetail" (hidden)
adjusters have been reintroduced
- GUI problems reported by @ganned92 have been corrected
- Tone curve could have some weird behavior when mouse was moving a
curve point outside curve editor

rtengine/settings.h

@@ -81,8 +81,6 @@ public:
     //  bool            bw_complementary;
     double          level0_cbdl;
     double          level123_cbdl;
-    int             nspot;
-    bool            locdelay;
     int             cropsleep;
     double          reduchigh;
     double          reduclow;