pasture app

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- Fixed issue with AgriNet Upload; fixed an issue with uploading null values to AgriNet
- Enhanced AgriNet Sync, If new paddocks are added to AgriNet they will be updated in the app (by pressing the import button)
- AgriNet, if paddock named are updated in AgriNet they will be updated in the App (by pressing the import button)
- Preparation for adding a Math Parser to allow for custom equations such as polynomial equations
- Preparing for RPM Axis calibration (disabled at the moment)