Geospatial Video Fixes

[RandallRebello]

Bug fixes and Enhancements

1. Default max distance to 1000.
2. The formula to calculate near and far distance has changed. (using cos instead of tan function)
3. The index out of range error has been fixed.
4. The program will now first look for sensor altitude (assuming it to be orthometric heights) first and if that is not found will look for SensorEllipsoidHeight.
5. Will refresh token when requesting for elevation data if too many calls are made and token expires.
6. These fields are made as optional : SensorRelativeAzimuth, SensorRelativeElevation, SensorRelativeRoll.