@toLang for the main language returning undefined

[danguilherme]

@toLang template function returns undefined when requesting the URL with config omitMainFolder set to true.

Seems like the auto-mapping of document translations is not working for the main language without a folder:

docpad-plugin-polyglot/source/polyglot.plugin.coffee

Lines 148 to 159 in 2e3d6cf

	for d in allDocs
	for l in config.languages
	if d.lang!=l and d.lang? and l?
	documentUrl = @docUrl d
	translationUrl = '/' + l + '/' + (@noLanguagePath d.lang, documentUrl)
	if translationUrl of translationsMap
	if translationsMap[documentUrl][l]?
	if translationsMap[documentUrl][l] != translationUrl
	@error "#{documentUrl} already has a translation
	#{translationsMap[documentUrl][l]} when adding #{translationUrl}"
	else
	translationsMap[documentUrl][l] = translationUrl