Fixed bug in configuration management, which caused new config to be created when saving existing config.
Fixed bug which caused configs not to be deleted properly.
Fixed bug which caused config name not being editable.
Fixed bug in K2 extra fields import.
K2 extra fields search is now using labels for select fields and radio buttons.
K2 extra field values of type drop-down, multi-select and radio button can now also be referenced with their label (not only ID).
Fixed bug in K2 image processor, which caused MD5 hash filename not to be created correctly.
Fixed wrong setting in K2 image processor which caused original image to be removed.