Adding corrected sensors to panorama and path_node view. Fixes #51

[Benvii]

Add corrected sensors to panorama.

Tested with the following code :

from  opv_api_client import RestClient, Filter, ressources
from geojson import Point

c = RestClient("http://127.0.0.1:5000")

s = c.make(ressources.Sensors)
s.gps_pos = Point(coordinates=[0,0,0])
s.degrees = 0
s.minutes = 0
s.create()

print(s.id_sensors)

panorama = c.make(ressources.Panorama, 2, 42)
panorama.sensors_reconstructed = { 'id_sensors': s.id_sensors, 'id_malette': s.id_malette }
panorama.save()

[zyioump]

Tested while developing path branch on opv-task