Fixed #1472 handled multiple markers/points when bearing is activated

[MV88]

Fixed #1472
The listener on the click on the map apply some sort of debouncing. This is causing sometimes to skip the case when 2 markers are added and passes from 1 to 3 (for example).

When this happens it stops drawing any other marker and it calculate the bearing on the first 2 inserted.

[coveralls]

Coverage decreased (-19.4%) to 57.75% when pulling eb115ee on MV88:iss_1472_bearing into c735782 on geosolutions-it:master.

[coveralls]

Coverage decreased (-0.1%) to 76.993% when pulling bdc1c8c on MV88:iss_1472_bearing into c735782 on geosolutions-it:master.

[offtherailz]

You can simplify :

if (bearingMarkers.length >= 2 && this.props.measurement.geomType === 'Bearing') {
     this.drawControl._markers = slice(this.drawControl._markers, 0, 2);
     this.drawControl._poly._latlngs = slice(this.drawControl._poly._latlngs, 0, 2);
     this.drawControl._poly._originalPoints = slice(this.drawControl._poly._originalPoints, 0, 2);
     this.updateMeasurementResults();
     this.drawControl._finishShape();
     this.drawControl.disable();
} else {
     updateMeasurementResults()
}

[coveralls]

Coverage decreased (-0.1%) to 76.969% when pulling 0801fb8 on MV88:iss_1472_bearing into c735782 on geosolutions-it:master.

[coveralls]

Coverage decreased (-0.1%) to 76.976% when pulling d8ad99e on MV88:iss_1472_bearing into c735782 on geosolutions-it:master.