Can't duplicate_level() if the level has an attribute defined

[samgregory]

I came across an issue today where I wanted to duplicate the bundle level with a transcription attribute (from a database built using convert_txtCollection). The function goes to duplicate the attributes on this level as expected (

emuR/R/emuR-autoproc_annots.R

Lines 342 to 353 in 4e1c44e

	# add attributeDefintions
	attrDefs = list_attributeDefinitions(emuDBhandle, levelName)
	for(i in 1:nrow(attrDefs)){
	if(attrDefs[i,]$name != levelName){
	internal_add_attributeDefinition(emuDBhandle,
	levelName = duplicateLevelName,
	name = attrDefs[i,]$name,
	type = attrDefs[i,]$type,
	rewriteAllAnnots = FALSE,
	verbose = verbose,
	insertLabels = F)
	}

) but then because the interal_add_attributeDefinition function does a check for that attribute name in the database it will always throw this error:

emuR/R/emuR-database.DBconfig.R

Lines 480 to 482 in 4e1c44e

	if(name %in% lads$name){
	stop("attributeDefinition with name '", name, "' already exists on level '", ln, "'! Currently, only unique attributeDefinition names are allowed within a single emuDB.")
	}

I want to be able to duplicate the level inclusive of the transcription attribute - can we have a way to rename this attribute when it is duplicated?