- Changed method getUDFs in DB_Model
- Removed method getUDF
- Moved method _getUDFsDefinitions to UDF_model and renamed to getUDFsDefinitions
- Updated model UDF_model
- Updated controller system/UDF
- Updated DB_Model to be more CS compliant
- If UDf are not set in DB UDF view will not display them
- Removed placeholder from multiple dropdown widget
- Dropdown widget has null value as placeholder
- Added permission system/udf to checksystem
- UDF checkbox now is only one value, no multiple checkbox anymore
- Added method saveUDFs to model UDF_model
- Added new constants to resolve json schema parameters