Field names from photo attachment config are incorrectly saved in QGIS project file

[erpas]

If there is a space in a field name used for photo name, it would be stripped from the name. For example, if the field is Photo Cam Nummer then in the QGIS project file it would be PhotoCamNummer. Please see the attribute names and its corresponding entries for photo name expressions in the QGIS project file.